SCIENTIFIC ABSTRACT GRECHISHKIN, V.S. - GRECHISHKIN, V.S.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000516620012-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: January 3, 2017
• Document Release Date: July 27, 2000
• Sequence Number: 12
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

The Investigation of Relaxation. Process6s in a SOV/56,35-2 8/60
'Tum
I , ber of Fluorine -Carbon Compounds
ASSOCIATION: Leningradskiy Cosudarstvonnyy universitet (Leningrad
State University)
SUBMITTED; March 14, 1958
Card 111/3

GRECHISEEKIN, V. S., Cand Phys-Math Sel (diss) -- "Investigation of dynamic gra-
dients of electrical fields of crystal lattices, using the method of nuclear
quadripolar resonance". Leningrad, 10159. 9 pp (Leningrad Order of Lenin
State U im A. A. Zhdanov), 225 copies ( n, No 9, ig6o, 122)

210), 240)
AUTHOR:
TITLE;
SOV/54-59-2-2/24
Grechishkin, V. S.
The Influence of Apparatus Factors on the Reproduction of the
Line Shape in the Nuclear Quadrupole Resonance (Vliyaniye
apparaturnykh faktorov na vosproizvedeniye formy liniy v
yadernom kvadrupollnom rezonanse)
PERIODICAL: Vestnik Leningradskogo univeraiteta. Seriya fiziki i khimii,
1959, Nr 2, PP 14-19 (USSR)
ABSTRACT: The lines of the nuclear quadrupole resonance suffer, by cer-
tain inner and outer factors, an extension which makes their
investigation more difficult. In this connection, the investi-
gations mentioned in the title on the reproducibility of the
line shapes were carried out. The investigations concerned:
1) The influence of the amplitude modulation on the reproduci-
bility of the mentioned lines. The formula for equivalent
frequency modulation in case of nuclear quadrupole resonance,
and magnetic modulation in case of magnetic resonance, is
found here which is equal to the formula by Andrew (Ref 2):
Card 113

SOV/54-59-2-2/24
The Influence of Apparatus Factors on the Reproduction of the Line Shape in
the Nuclear Quadrupole Resonance
-42
0 -
S* 0 S + 0 (1); for the case of separation of a secondary
2 2 4 2 142
harmonic of the signal: S* - S + --A (6) (S* - s'econdary moment
2 0 6 2
0
found by experiment, S 2 , exact secondary moment). This for-
mula can be used for a correction of the experimental observa-
tion of the secondary moment. 2) Comparison of the frequency-
and Zeeman-modulation from the standpoint of reproducibility
of the line shape. The distortion is considered here which is
caused by the time constant of the phase detector. The expres-
sion S* - S 0+ 2(v-r)2 (13) for the secondary moment is ob-
2
tained. As with the Zeeman-modulation a distortion, as in for-
mulas 1 or 6, is missing, the use of this modulation is more
convenient than the frequency modulation. In the expression (13)
v denotes the velocity of passage through the resonance area,
IC the time constant of the phase detector. 3) Influence of the
Card 2/3 outer magnetic field. For the intensity of lines, an expression

SOV/54-59-2-2/24
The Influence of Apparatus Factors on the Reproduction of the Line Shape in
the Nuclear Quadrupole Resonance
is found here which is inversely proportional to the magnitude
of the magnetic field and directly proportional to the width
of lines. The surface under the curve remains unchanged.
f (16). 4) Influence of the low frequency band filter.
YH0
The passage of the signal through an ideal filter.of low fre-
quency is considered. The form factor of this correction is
represented by a function (17) of the time of transverse relax-
ation and,of the modulation frequency; by some conversions, it
passes over into an expression which contains the Krampf func-
tion. If the argument of this function is complex, it is os-
cillating, the frequency of oscillation is represented by the
width of lines, the amplitude by the filter band. Finally, the
author thanks F. I. Skrinov for a number of valuable critical
remarks and for hie interest in the work. There are 2 ref-
erences.
SUBMITTED: March 14, 1959
Card 3/3

CIL
0.0-1~ 00
Ole ',Oj
eto
cy~),s VAT ce
.9e,
-90 5e
to
coT &e1 se6- ted, 9 al 0
go e jxx se) -a
too llcv~ 'q \I -a. toT
e- ~,A-o
IG &~A t ~.5 -~-o c -T . 50 ? a,\,-
Te - t -re.
-ferbo 0-r'J -reOOT 9, -Geco - 5 e ece
c~-T vp 5&e -re XG ,~CO.AG
j~o 't 5 10- Ilto e'9 c
te
-re. g~~
"Oe&. tell -.1ve aox~ oi~c 0t
le esIS a, &GS
5 0 1e e V
0
j ,ge IteT ,~,e trA35, plc qqaetv~ aat vill e
&es te0 ,o 3,06. Ac;c~e
Ve -
tc~e 0 To, ~,eo-T
't~,e .011
-re t 0 0 t
T~ ere. 8, )DI 'T - 01~ AG15 6e
.\.qe aV GOA & ~o 0 O-T
e Se s Ie
te's,5 t tlcO &I -re ,$e,, '3~ ~O ,s e5
t,,e 0 a. '\ lcv~
.re OV6 j~~p qel se .0 5,0.
'G t 0, Tyco
to
5 Oe re- 6.er ,.re
~f~e e6- 5e'al 111 oT -, e
Go, 50,10. .1 elo -re lo~je ~~
Te &,e . 5t C, cel ro*
5 t~~t lao bvol~ .1, 0
e es A-S
T OSO 0 e ~ddl
-Iorll~-\O

SOV/120-59-2-8/50
Recording Line Shapes in Pure Quadrupole Resonance
NQR at the present time. Ebcamples are structure studies
on crystals, measurement of quadrupole moments,
assessment of type and degree of hybridization, and
detecting nonequivalent positions in crystal lattices.
It is also used in low-temperature studies. A secondary
temperature standard has recently been based on NQR,
(Ref 1). The apparatus to be described is highly
sensitive and distorts the line shapes little. Fig 1
shows the block diagram. The specimen is placed in the
coil of a screened autodyne detector, whose frequency is
modulated by a low-frequency voltage applied to a PV-1
vibrating capacitor. The 30 cls filter removes the
parasitic amplitude modulation. The NQR is amplified by
a three-stage low-frequency amplifier and is fed to a
phase-sensitive detector, whose reference voltage is
supplied via a phase shifter and amplifier. Wang's
circuit (Ref 2), or the circuit shown in Fig 2, is used
in the autodyne detector. Wang's circuit reproduces the
line shapes well, but it is too insensitive for use in
seeking unknown signals in small amounts of material.
Card 2/6 The system shown in Fig 2 is a normal self-quenching
super-regenerator. The self-quenching is controlled by

SOV/120-59-2-8/50
Recording Line Shapes in Pure Quadrupole Resonance
means of the feed-back resistor in the cathode circuit.
The sensitivity is exceptionally high, perhaps higher
than ever previously attained. For example, the signal-
to-noise ratio given by the 35 C1 in 50 g of potassium
chlorate at the temperature of liquid air is 120 (as
seen on the oscilloscope). The low-frequency amplifier
and autodyne detector are fed from batteries. The phase-
sensitive detector is babed on Schuster's circuit (Ref 3)
in which the high internal impedance of a pentode is:used
to isolate the output circuit from the switching tube.
All tubes were selected for minimum noise. The reference
voltage amplifier includes a frequency doubler, because
the filter system isolates the second harmonic of the
signal. The distortion caused to the signal by the
finite amplitude of the frequency modulation is then
given by S2" = so + 1/6 -~m2 (1)
where S;~ is the second moment of the absorption line as
Card found by experiment, So is the true second moment7 and
3/6 1 is the amplitude of the frequency modulation. Thus
Oe second derivative gives even less distortion than

SOV/120-59-2-8/50
Recording Line Shapes in Pure Quadrupole Resonance
does the first (Ref 1~). Fig 4 shows the C135 signal
given by Sr(CJ.0-4)2 at room temperature. The 30 9
specimen was poured directly into a vessel surrounding
the coil of the detector. The apparatus can be used to
seek and examine unknown lines. The self-quenahing
super-regenerator is used to locate unknown lines7 and
Wang's cirouit to examine them. The spectra are recorded
automatically on an EPP-09 recorder if they are weak;
the frequency deviation is made much less than the line
width. The clock mechanism varies the frequency at
100-200 kc/s per hour. Time-constants of 10 and 20 see
are usual, but the zero of the phase-serisitive detector
is stable with lesser values. The frequency can be
varied from 10 to 50 Mc./s by changing the cail; this
covers the range in which the quadrupole spectra of Cu.
and Cl lie. The dispersion and absorption signals are
detectable with the super-regenerator. Frequency
Card instability in the detector distorts the line s~iapes
4/6 (RPfs 5, 6). The resonances from c135, c137, Cu63 and
Cu05 have been observed for several materials with this
system. The C135 lines in magnesium, calcium, strontium
and barium chlorates have been observed for the first time;

SOV/120-59-2-8/50
-Recording Line Shapes in Pure Quadrupole Resonance
these lie near 29.6 Mc/s at room temperature. It would
appear that the crystals are isomorphous. The tempera-
ture variations found for the chlorates of divalent
metals are about half those found for univalent metals.
In conclusion the author wishes to thank F.I. Skripov
for useful advice, and A.P. Vasillyev for the loan of
the vibrating capacitor.
[this is a complete translation).'
Figure,captions are as follows. Fig 1, block diagram of
the apparatus. a) autodyne detectort frequency-modulated,
b) clock mechanism, a) phase shifter, d) reference
voltage.amplifier, e) phase-sensitive detector,
f) rectifier, g) stabilizer, h) quartz oscillator, (units
lettered from left to right along lines). Fig 21 the
super-regenerator. Fig 3, the phase-sensitive detector.
a) reference voltage, b) outputl c) input (left to right).
Card 5/6 Fig I+t the NQR signal from C135 in Sr(cl03)2..

SOV/120-59-2-6/50
.. I Recording Line Shapes in Pure Quadrupole Resonance
There are 1+ figures and 6 references, of which 4 are
English and 2 Soviet.
ASSOCIATION: Leningradskiy gosudarstvennyy universitet
(Leningrad State University)
SUBMITTED: March 26, 1958
Card 6/6

/oc> 66877
26( BOV/54-59-4-2/22
AUTHOR: Grechishking V. S.
TITLE: In Apparatus Designed for Observing Nuclear Quadrupole ResonanoO
With the Help of Zeeman Modulation
PERIODICAL: Vestnik Lanlngzadzkogo unjv&rAjAAU. Seriya fiaiki i khinii,
1959, Nr 4, pp 19-23 (USSR)
ABSTRACT: A quadrupole level in crystals occurs on interaction between
the quadrupole momentum of a nucleus and the electrostatic
field of the orlstal lalkticOften the gradient of the electric
field exhibits rotation symmetry, the quadrupole level possesses
I N degenerations (M - magnetic quantum number). When applying
an outer magnetic field to the crystal, the degenerations vanish
which leads to widening of the nuclear quadrupole resonance
lines. This fact in employed to observe the phenomenon with
the help of Zeeman modulation of the line intensities. An ap-
paratus is described which permits observation of the nuclear
quadrupole resonance signal immediately on an oscilloscope
screen by means of a nonsonochromatic radiation sour ce and Ze*-
man modulation. Block diagram of the apparatus and generator
are illustrated in figures I and 2. The Zeeman modulation is pro-
duced by means of a medium-aise solenoid with 9,000 windings and
Card~'tj- a supply device of the ZG-10 type. The beat results were ob-

66877
SOV/54-59-4-2/22
An Apparatus Designed for Observing Nuclear Quadrupole Resonance With the
Help of Zeeman Modulation
tained at a supply voltage of 40 v and a frequency of 40 cycles-
To reduce the effect of the modulation scheme, two T-filters were
used. A three-point generator was employed. The conditions of
feedback could be chosen in such a manner that the oscillation
system screened itself. Furthermore, the supergenerator produces
the entire frequency band, which allows to observe the nuclear
quadrupole resonance signals immediately without passing through
a spectrum. Figure 3 illustrates the signal of nuclear quadrupole
resonance which was taken on potassium ohlorate with the isotope
c135 at room temperature'. By means of the apparatus described
the author studied the coupling nature of a number of molecule
crystals as well an the hybridization of some chlorine compounds
(Table). The absorption frequency was measured by means of a
heterodyne wavemeter of the type 121. Investigations have shown
that the structure of solids is disclosed by the nuclear quadru-
pole resonance when using small quantities. In conclusion it is
mentioned that the author thanks Professor So A. Shchukarev and
M. A. OranskkW for supplying the ;wterlals, - - __ and Docent F. I.
Skripov foF -valuable advice. There are 3 figures, 1 tablep and
Card=Lt/3 4-r-efe-rences, 1 of which is Soviet. 41

21(8) SOV/26-59-8-19/51
AUTHOR:' Grechishkin, V.S. (Leningrad)
TITLE: A New Application of Nuclear Resonance
PERIODICAL: Priroda, 1959, Nr 81 P 85 (USSR)
ABSTRACT: Today, the phenomenon of nuclear quadrupole resonance will
be greatly utilized to investigate the influence of ionizing
radiations on solidsv especially to receive information about
the character of chemical bonds in the molecules and their
arrangement in the crystal lattice. In this article, the
author reports on an interesting first experiment made by
Soviet scientists, the influence of X-rays on Ca (CIO )
*
2
In order to observe the above resonance, a self-quencAing
superregenerator with a modulated frequency and an ampli-
fier of low frequency with a filter system was utilized. The
modulated frequency was accomplished by the sound generator
ZG-10. The resonance can be observed on the screen of the
oscilloscope (see photograph). The author also reports on
Card 1/2 former experiments published in the "Zhurnal eksperimentallnoy
V1,

SOV/26-59-8-19/51
A New Application of Nuclear Resonance
i teoreticheskoy fizikill (Journal of Eynerimental and
Theoretical Physics)p v01- 36, Nr 2,- 1959, p 630-
There is 1 photograph and 4 references, 2 of which are
French, 1 English and 1 Soviet. V1,
Card 2/2

GRECHISITIN, V.-.
Zffect of apparatus factors on the
nuclear quadrupole resonance lines.
159.
reproduction of tho shape of
Vent.LGU 14 no.10:14-19
(MIRA 12:6)
(Crystal lattices)

vf.4

24(7) SOV/56-;"-2-51/'3
AUTHOR: Grechishkin, V. 3.
TITLE: The 'lidth of the Lines of the Qundrupole Resonance of Chlorine
in the Chlorates of Barium, Sodiur~,i, and Potassium (Shirina
liniy 1:vadrupollnot-o re,;onarisa khlorn v Ichloratakh bariya,
natriya i kaliya)
PERIODICAL: Zhurnal eksperirontallnoy i teorotiche9koy fizi'-.i, 1959,
Vol 36, Ur 2, pp 63o-632 (IJ33R)
ABSTRACT: The quadrupole resonance in barium chlor 'nto wao detected b.Y
but sodium c-lor~,'-e and -
the author, potassium chlorate were
investigated already in previous papers (Rofs 1, 2). Hither-
to no Precise results and interpretations of the line width
of the above-mentioned compounds have been available. A
o1upergenerator with frequency modulation or Zeeman Neyeman)
modulation, a narrow-band amplifier for low frequencies, and
a phase detector were used for observing the resonarce. All
measuremento were carried out at room tnmperature. The cor-
rections made are discusse ~5 in shor~j The signals of the
quadrupole resonance of C1 and C1 in powders of Ba(clo 3)21
Card 1/3 1TaClO 3) and KC103were recorded. Rocently, -the z:tuthor found

1;011 6
/ ; ~-36-2-51 / 3
of ChIalne in tlie
a quadrupole resonance also in potassium chlorate. The
amplitudes Of the signals can be explained viell b.,~ the
abundance of the chlorine isotopes. The results of the
iments are given in the followin,-' tfj~~ble
measured
natural
exper-
Substance Isotope frequency A v
L9 (Cl-"
,
m e
- a c y c 1 e 3C
"Clos
-,
,
. 37
I 6v (Cl
Ba(C103)2 C135 29.6 2300 1
0

37
Cl

3.2 2600 .
7

C10
3 C135
28.1 1100

.2
37
Cl
22.2 900

aC10 35
Cl
29.9
1300

.13
3 C137 23.6 1150
of the Lines of tn Quadrupolo Resonance
of Barium, Sodium, and Potassium

SOV156-36-2-51163
The Width of the Lines of the Quadrupole Resonance of Chlorine in the
Chlorates of Barium, Sodium, and Potassium
The line width o4the investigated chlorates mainiv depends
on the dipole-dipole-interaction of nuclei since the ratio
olmagnetic moments of the chlorine isotopes is equal to
1.2. 1.fter making the necessary corrections, the author
found d = 6.9 R for NaC10 for the dimension of the elementary
cell. This result agrees ;ell with the value d = 6.5 R found
by X-ray structure analysis. The author thanks F. I. Skripov
for his discussion and for his interest in this paper.
There are 1 table and 6 references, 1 of which is Soviet.
ASSOCIATION: Leningradskiy gosudarstvennyy universitet
(Leningrad State University)
SUBMITTED: November 1, 1958
Card 3/3

21(j), 240), 24(2) SOV/53-69-2-2/10
AUTHOR; Grechishkin, V. S.
TITLE: Nuplear Quadrupole Resonance
PERIODICAL: Uspekhi fizicheskikh nauk, 1959, Vol 69, Nr 2, pp 189-216
(USSR)
ABSTRACT: The author giveL4 a detailed survey of the principle, the meth-
ods, and the possibilities of applying nuclear quadrupole
resonance. Many nuclei of the periodic system have quadrupole
moments, by the amount of which the extent of the deviation,of
the nuclear shape from a sphere is characterized. In crystals
an orientation of nuclear spins occurs as a result of the inter-
action between nuclear quadrupoles and the electric field.of
the molecular electron shells. If a rad-iofrequency field is
applied perpendicular to this direction of orientation, ab-
sorption ocours if the radiofrequency is equal to the frequency
of the transitions between the levels. This resonance phenom9non
is used for the investigation of the crystal structure, detei-
mination of the quadrupole moments, investigation of degree and
nature of the hybridization of covalent bonds, investigation of
Card 1/3 rotational oscillations, moments of inertia, etc. It is like-

Nuclear Quadrupole Resonance
SOV/53-69-2-2/10
wise used in low-temperature engineering. The author also sug-
gested (Ref 101) that they may be used for the stabilization
of weak magnetic fields. In the introduction the author dis-
cusses several papers dealing with thin subject (Landau etc)
and gives a rough outline of the theoretical fundamental bases
of the occurrence of nuclear quadrupole resonance lines.
Chapter 2 deals with the experimental methods of investigating
nuclear quadrupole resonance. Figure 2 shows the block scheme
of a radiospectroscope used by the author, and figure 3 shows
a resonance signal recorded by means of this instrument
(barium nitrate at room temperature, 29.6 megacycles). Figure 4
shows the scheme of a oelf-quenching 8uperrogenerator, and
figure 5 a signal diagram. Figure 6 iihows the scheme of a phase
detector according to Schuster, and figure 7 shows a resonance
signal obtained by the author (potassium chlorate), which was
obtained by employing the Zeeman-moduAlation method. Further,
numerous single results obtained by Woutern authors are men-
tioned. Chapter 3 contains details of the shape of nuclear
quadrupole resonance-lines and discusses relaxation processes.
The reasons for a broadening of lines are discussed (direct
Card 2/3 magnetic dipole-dipole interaction between nuclei, broadening

Nuclear Quadrupole Resonance
SOV/53-69-2-2/10
in connection with the apin-lattice relaxation time, exis.tence
of mechanical tensions in the crystual, the magnetic terrestrial
field in the case of polycrystallino samples); the theoretical
baBOB for the calculation of the shape of lines are given. In
chapter 4 the temperature- and pressure dependence of quadru-
pole resonance frequency is discussed, and chapter 5 deals with
the occurrence of a Zeeman effect in nuclear quadrupole reso-
nance. These chapters were compiled nearly exclusively from
the material obtained from publications by Western authors, as
also the application of quad-rupole resonance for the investiga-
tion of electric field grad-Jents in crystals, which is de-
scribed in the following chapter. A table gives the values of
resonance frequency, line-width, FLnd the signal noise ratio for
a number of chlorine- and antimony isotopes in the compounds
P-C6H4Cl 21 SbCl 31 NaClO,, CH3C1, C2H2Cl 21 SbBr 31 and Sb2s3 for
the corresponding temperatures. There are 8 figures, 1 table,
and 180 references, 14 of which are Soviet.
Card 3/3

24(2)
AUTHORS: Grechishkin, V, S., Skripov, F. I. SOV/20-126-6-21/67
TITLE: ~he Application of the Quadrupole Nuclear Resonance for the
Determination of Frequencies of Lattice Vibrations in the
Series of Chlorates (Primeneniye yadernogo kvadrupollnogo
Irezonansa dlya opredeleniya chastot reshatochnykh kolebaniy
v ryade khloratov)
PERIODICAM Doklady Akademii nauk SSSR, 1959t Vol 126, Nr 6, pp 1229-1231
(USSR)
ABSTRACT: The present paper deals with the investigation of the tempera-
ture dependence of the quadrupole nuclear resonance frequency
of a series of chlorates with mono- and bivalent metals. As an
example, figure 1 shows the nuclear resonance of barium chlorate.
Results of the investigation under review are summarized in
table 1. In virtue of formula (1), the last column of the table
shows the temperature coefficient of vibration at room tempera-
ture. It reveals that the temperature coefficient of chlorates
of bivalent metals is approximately twice lower than the one
relatine to chlorates of monovalent metals. The mean frequency
of rotational vibration is then computed (-150 cm-1). By
Card 1/2 investigating the spectrum of the quadrupole nuclear resonance,

The Application of the (~uadrupole Nuclear Resonance for SOV/20-126-6-21/67
the Determination of Frequencies of Lattice Vibrations in the Series of
Chlorates
the mean life of the quanta of rotational vibration may be
computed. The spin-lattice relaxation time is computed with
formula according to H. Bayer (Ref 2). The measurement of
the spin-lattioe rolaxation time in potassium chlorato at
room temperature yielded T - 0-04 seconds. After computing the
mean life of the quanta of rotational vibration with formula(2)9
two values were obtained, of which the value
0-5010- 11 seconds was found to be the right one by comparison
with the mean life of -the quanta of translatory vibration.
Finally, the paper deals with the marked dependence of the
spin-lattice relaxation in the case of nitrogen nuclei in the
crystalline urotropine. There are i figure, 1 table, and
15 references, 5 of which are Soviet.
ASSOCIATION: Leningradskiy gosudarstvennyy universitet im. A.A. Zhdanova
(Leningrad State University imeni A. A. Zhdanov)
PRESENTEDs March 9, 1959, by A. N. Terenin, A,,,ademician
SUBMITTED: March 7, 1959
Card 2/2

3/058/6 1AOO/O 10/0531,100
AOO1/A1O1
AUTHORS: Grechishkin,, V.S., Skripov, F.I.
TIM:. Application of nuclear quadrupole resonance to investigation of the
gradient of electric field in several crystals
PERIODICAL.- Referativnyy zhurnal.Fizika, no.io, 1961, 165, abstract 10V373 (V
sb.-"Paramagnitn. rezonans", Kazan', Kazansk. un-t, 1960, 16o-i62)
The authors studied spectra of nuclear quadrupole resonance In some
chl6rates. On the basis of data obtained, the authors determined avvrage inertia
moments of molecules for W and It-modifteations of4aonochloroaggtic acid,
whiaM8 rned out to be respectively (in g.cm2): 130xiO 158xlO-L~u and
85x10:7- . The times of spin-lattice relaxation for the same modificationlej de-
termined as the-mean life times of,quanta. of rotational swinging-(at room temperw-0""~t
ature) are equal (in sea) toi O.61x1O_11; O.86x1O-11 and,0.36xlO-11. Potential
barrier for phase transition in hexachlorane was estimated',to equal to 10 kcal.
Signals of nuclear quadrupole resonance were also observed from solid
Card 144.

S/058/'61/000/010/053/10.0
Appl-ication of nuclear quadrupole resonance ... A001/AjO1
silutions of SbC13 in KC1 and C6H6, and shift of nuclear quadrupole resonanae
,3 solution at liquid oxygen temperature.
freTaency was observed in saturated KCJO
FA-~,straoter's note: Complete translation]
Card 2/2

S/054/60/000/004/014/015
B004/BO56
AUTHORS: Grechishkin, V. S., Ovehinnikov, I. M.
TITLE: Device for Studying Nuclear quadrupole Resonance in Nitrogen
Compounds
PERIODICAL: Vestnik Leningradskogo universiteta. Seriya fiziki i khimii,
1960, No. 4, PP. 126-129
TEXT: A simple device for studying the nuclear quadrupole resonance lines
of N14 is described. The circuit of the Franklin generator is shown in
Fig. 2. The sample is introduced into the well-screened coil L 2 (volume,
2.3 cm3; inductivity, 20 microhenries). The total capacitance of the cir--_
cuit at 3.3 Mc/sec is 140 micromicrofarads. The capacitor C 2 serves for
the rough adjustment of the generator frequency between 2 - 4 Mc/sec. The
rotor of C3 is driven by a Warren motor (frequency change, 1.5 kc see-min).
Resonance is studied by means of Zeeman modulation (40 cps). Other parts
of the device are a ~r-io (ZG-10) audio-frequency generator, a low-
frequency amplifier (1 : 1000) with 6xin (6Zh1P) tubes, a phase detector,
Card 1/3

Device for Studying Nuclear Quadrupole S/054/60/000/004/014/015
Resonance in Nitrogen Compounds B004/BO56
and an 3nn-og(EPP-09) recorder. The resonance of N14 in Urotropin was stu-
died at 200C on 3-3085 Mc/sec. F. I. Skripov, head of the Laboratory of
Radiospectroscopy, is thanked for a discussion. There are 3 figures and
8 references: 2 Soviet, 4 USv and 2 Japanese.
Legend to Fig. 2: 8 = volt; MK4o = microfarad; ROM - kilohm; Ml~ - milli-
henry; OH. = ohm; YHq = to the low-frequency amplifier; n(P= micromicro-
farad; 6H15A= 6NI5L tubej HK?H= microhenry.
Card 2/3

S/076/60/034/05/18/038
B010/BO02
AUTHOR: Grechishkin~ V. S.
TIT LE Investigation of Atomic Interaction in Chlorates by the
Method of Nuclear Quadrupole Resonance
/7
PERIODICAL: Zhurnal fizicheakoy khimiij 19609 Vol- 349 No. 5,
PP- 1050-1052
TEXT: The author investigated the change in the quadrupole resonance
frequency of some ohlorates in which the sheath of the chlorine nucleus
remains unchanged and only that at*om changes to which the C10- group is
3
linked. A device having a superregenerator with self-extinction and fre-
quency modulation was designed for this purpose, whereby extremely high
sensitivity was attained (Fig.: signal of nuclear quadrupole frequency
in barium chlorate). Frequency modulation is performed by means of a special
reactive tube. Polyerystalline samples of potassium-, sodium-9 and barium
chlorate were examined at room temperature. Absorption lines of C135 were
observed at 28.09, 29-93, and 29-59 Mc/s. Investigations of the temperature
dependence of nuclear quadrupole frequency showed that the temperature co-,
efficient of barium chlorate is about half as high as that of sodium
Card 1/2

Investigation of Atomic Interaotion in S/076/60/034/05/18/038
Chlorates by the Method of Nuolear B010/BO02
Quadrupole Resonance
chlorat6 (about 10-4 degrees" I). The shape of the signal vf nuclear quadru-
pole frequency of ClOj permits an explanation of the major part of dif-
ferences in nuclear frequency of chlorates. The position of the frequenoies
depends on the differences in the moments of inertia and the oscillation
frequencies of the C103 group (assumed in view of the different tempera.-
ture coefficients), as well as on the parameters of asymmetry and electro-
negativity of the metal atom. Finally, the author thanks S. A. Shukarev
and _T] i J(deceased) for supplying the subs tana 'e6
sideration. blarko-wnikov is also mentioned in this paper. There ar5
1 figure and 5 referenceeg 1 of which is Soviet.
ASSOCIATION: Leningradskiy gosudaretvenriyy universitet im~ A. A. Zhdan0ia
(Leningrad State University imeni A. A. Zhdanov)
SUBMITTED: July 169 1958
Card 2/2

30405
S/139/61/uoo/oo5/oo1/oi4
WOO 6157,31 E132^135
AUTHOR3 GrechLisbkln, V_1q_
TITLEs Determination of the magnitudes of the moan lives of
quanta of rotational vibrations in certain crystals
from the data for purely quadrupole resonance
PERIODICAL: Izvestiya vysshikh uchobnykh zavedeniy, Fizika,
no.5, 1961, il-A
TEXT: The method of nuclear quadrupole resonance (n.q.r.)
has been applied for estimating the order of magnitude of the moan
life times of quanta of rotational vibrations in certain crystals.
Resonances in the isotopes of Cl, Br and N have been observed.
The c.ontribution, to the line width in the spectra of combination
scattering of the finite life of the rotational-vibrational state
has been estimated. Comparison with experimental observations of
the line widths in the spectrum of combination scattering at low
frequencies showed that the contribution to the width due to the
mechanism considered amounts to 5-10% of the total width. This
shows that the method of n.q.r. is a 'pplicable for estimating the
order of magnitude of the life time although this fails if there
Card 1/2

30465
Determination of the magnitudes of ... S/l39/6l/ooo/oo5/ool/oi4
2132/E135
is strong line widening by the apparatus, impurities or
anharmonicitios, -ate. The magnitude of the life found is
reasonable as it in similar to what is found for phonons (quanta
of translational oscillations). Hitherto life calculations have
been almost impossible because of inadequacies in non-linear
lattice theory. It in shown that each molecule makes about
100-200 oscillations in each excited state. The decay of
rotational oscillations is not connected with the presence of
impurities since these waves do not spread through the lattice.
The life time is probably conditioned by the potential of the
intermolecular forces.
There are I table and 11 references3 7 Soviet and 4 non-Soviet.
The two English language references read an followas
Ref.l: T.P. Das, E.L. Hann. Solid State Phys;-~*, Suppl. 1,
. No-5, 1958.
Ref.8: N. Bloembergen, E.M. Purcell, R.V. Pound. Phys.Rev.9 Vol-73,
679, 1948.
ASSOCIATION: Permskiy gosuniversitet imeni A.M. Gor1kogo
Card 2/2 (Peru State University imeni A.M. Gorlkiy)
SUBMITTED; October 24, 196o

GRECHISHKINY V.S.
Calculating the constants of quadrupole bonds in acme homonuclear
diatomic molecules of halides. Izv.vys*1ucheb.zav.; fiz. no-5:23-25
161e (MRA 14:10)
1. Fermskiy gosudaretvemiyy universitet imeni A.M.Gortkogo.
(Halides) (Chemical bonds)

-0811611003100410071030
B1021B2114
ig ( /
AUTHOR: Grechishkin, V. S.
TITLE: Nuclear spin-lattice relaxation for the spin 1 or 5/2
PERIODICAL: Fizika tverdo.-o tela, v. 3, no- 4, 1961, lo66-lo67
TEXT: The present paper gives a generalization of a formula of H. Bayer
(Zs. f. Physik, 130, 227, 1951) for the spins 1 and 5/2. Bayer has
developed a theory of spin-lattice relaxation in nuclear quadrupole
resonance for the spin 3/2, which gives a satisfactory description of
the temperature dependence of the relaxation time TV Since T1depends
on the mean lifetime of a rotation-vibration quantum, an estimate of Ta
can be made from an accurate measurement of TV Analogous estimates can
also be made for the nitrogen (spin 1) or iodine (spin 5/2) nucleus.
No data are, however, available in the literature for these important
cases; they are provided in the present paper. Spin 1: At moderately
low temperatures, the relaxation mechanism is determined essentially
Card 1/5

22o41
Nuclear spin-lattice ...
S/.'81/61/003/004/007/030
B102/B214
by the transitions with I 6ml = 2, the contribution of transitions with
IL~ M': = 1 being negligible. For this the Hamiltonian is:
= A eQq,.92 (t) (12. _#__ 12
X-~2 16 1 (2j - 1)
where eqq zz is the quadrupole binding in frequency units, Q(t) the angle
between the symmetry axis and the electric field strength, J the spin of
the resonating nuclei; I+ - Ix + U y are the operators of the nuclear-
spin projection. If J - 1, one obtains after some transformations
02 (t)(I2+ 12 sonance
+2 4 + _), where V Q is the nuclear quadrupole re
frequency. From this one obtains for the transition probability:
2 V-6-11 , 'r ('),
W-0. J 2 (3),
V., hv Q 2 LS A, K (T) e2g,"dt,
V+
-CD
Card 2/5

2204.1
3/181/61/003/004/007/030
Nuclear spin-lattice B102/B214
where K(T) is the correlation function. If only the rotation vibrations
bare considered, the spectrum of the correlation function is given by
2 (ehx- 1)
4) (4)t
J1 (V) -2;;1 J)t
where J is the moment of inertia of the molecule, Vt the rotation-
Vib ration frequency of the moleculet x - h,.jt/kT. When the nuclear spin
changesp the form of the matrix elements V does not remain constant.
+2
These elements can be calculated with the help of the known wave functions.
~With (3) and (4) one obtains
(5)-
T'1Aw1-2-2W12 2 (ch x - 1) - -#- 7chX-1
-2
1)2 1
A comparison of this formula with that of Bayer shows that only a
numerical factor is altered. Spin 5/2: In this case, two transition
Card 3/5

22041
S/181/61/003/004/007/030
Nuclear spin-lattioe ... B102/B214
frequencies are to be observed: v eQqz z and V eqqzz. These
1 10 2 20
transitions must have different relaxation times. By a treatment analogous
to that given above one obtains
10?
(7).
Ut (7).
T11401-IN -94hKvjP)2% 2(ehx-1) 2chx-I
2M 1)2 1
This formula can,be used for the calculation of a "molecule generator"
or.. for the estimation of the extremum of Tafrom known TV In some cases,
the assumptions used by Bayer for the calculation of the correlation
function are not fulfilled; thus, for example, the assumption that all
excited states have the same lifetime, and that a transition of one state
into another always takes place with a preceding return to the ground
state. This, for example, is not fulfilled in the case of Urotropin.
Card 4/5

2204,
Nuclear spin-lattice ...
In a number of other cases, a good
obtained. At present, a more exact
The author thanks P. I. Skripov for
Essentially complete translation.]
and 1 non-Soviet-bloc.
S/181/61/003/OOAt/007/030
B102/B"14
agreement with the experiment is
theory still offers great difficulties.
discussions. [Abstracter's note:
There are 2 references: 1 Soviet-bloc
ASSOCIATION: Leningradskiy gosudarstvennyy universitet (Leningrad
State University)
SUBMITTED: June 9, 1960

GRECHISHFIN, V.S.; AYNBINDER, N.Ye.
Quadrupole effects in the nuclear resonance spectrum of urea
and sodium thiosulfate single crystals. Fiz. tver. tela 3
no.6:1821-1826 Je '61. (MIRA 14:7)
1. Permskiy gosudarstvennyy universitet, im. A.M.Gor'kogo.
(Electric moments) (Sodium tniosulfate crystals--Spectra)
(Urea crystals--Spectra)

GREICHISHKDI, V.S., SVETWV, Yu.G.; SOYFER, G.B.
Variation of the multiplet nature of the spectrum of quadrupole
nuclear resonance in solid CC14. Fiz. tver.-tela 3 no.8:2390-
2393 Ag 161. (MIRA 24:8)
1. Fermskiy gosudaretvennyy universitet im. A.M. GorIkogo.
(Carbon tetrachloride)
(Ruclear magnetic res6nance and relazatIon)

GRECHISHKIN, V.S.; SOYFER, G.B.
Irrvestigatine orientational melting in certain crystals by
the nuclear quidrupole resonance method. Fiz. tver. tela 3
no.9:2791-2793 S 161. (MIRA 14:9)
1. Permskiy gosudarstvennyy universitet imeni A.M. GorIkogo.
(Crystals--Thermal properties)
(Nuclear magnetic resonance and relaxation)

SUKHOV, V.N., inzli.; GRECHISHKIN, V.S.2 inzh.
I -
Field trial of the A-2 mining unit. Ugoll.pram. no.4:21-23
J1-Ag 162. (MIRA 15:8)
1. Trest "Krasnoluchugoll".
(Coal mining machinei-y"-Testing)

S/1181/61/003/010/011/036
B111/B138 , I
AUTHORS: Grechishkin, V. S., and Aynbinder, N. Ye.
TITLE: Relative intensities of nuclear resonance lines in single
crystals in the presence of magnetic and quadrupole inter-
actions
PERIODICAL: Fizika tverdogo tela, v. 3, no. 10, 1961, 2981 - 29a6
TEXT: The present paper is a continuation of Ref. I (V. S. Grechishkin,
N. Ye. Aynbinder, FTT, 1, no. 6, 1821, 1961), where formulas had been
given for the energy levels of nuclear resonance in the case of quadrupole
interaction (nuclear spin J = 1 and J - 312). For these spins, formulas
are now derived for the relative integral intensities of the absorption
lines. The external magnetic field is along the principal axis z of the
gradient tonnor of the crystal's electric field. The method of
calculation has been provided by L S M antri (Ref. 3,. Te6riya i raschet
al.
kolebaniy m'olekul. Izd..AN SS R, M:, ;9~O The power absorbed by the
specimen is proportional to Psift2g Isin 9, + (BsinG 1cosq, +.Ccosel) 2 (3).
Ist cafe: J -.1. If 0 = 0 and 0, n/2, y, - 0 (0 being the*angle
n--A 1 A

S/181/61/003/010/011/036-
Relative intensities of nuclear -B111/D138
between magnetic field and z-axis, and y being the azimuthal angle), the
following relations are obtained employing (3):
Bl,,
2 2 11RI -+- q2 (10)
2. -2 -VRI::;:-V
The subscripts indicate the transitions (e. g., B 30 A3 --~- A1 is the
parameter of asymmetry, R = 4,,Ho , eQq,z is the constant of the
eQq,z
quadrupolebond, and # is the nuclear magnetic moment. Hence, the power
2
,,absorbed is only proportional to B (10) is valid only if the r-f coil
axis is directed along the x-axis. If it id directed along y, only the
term with izwill remain nonvanishing in (3), and the following relations
will be satisfied:
Card 2/4

S/181/61/003/olo/011/036
Relative intenoities of nuclear... B111/B158
A2
3.I
2 2 Vk-77f ~2
A? -4-
3. 2=
i VRI
A2, 1= I
-#-
Hence, if G 7E/2 and (p 0, the r-f coil axis will be directed along the
x-axis, and the following will be valid: B 2 = _ (3,]Z)2 - ; B = B
2.,1 (3+ 1)2 + 02 3,2 311
0. Th(-,, position of the principal axes of the Gradient tensor of the
crystal's electric field may be determined from the spectra with different
crystal positions. 2nd case- J = 3/2, in treated in a similar way.
Formular, obtained are valid with the exception of the intersection points
of the enerey levels. If the r-f coil axis is directed along x, the
transitions A 1-~' A2and X3-), A4will be forbidden. In general, all of the
six possible transitions can be excited near the level intersection points
~y a rotation of the r-f coil. But some of them, and one at le~ast, are

S/181/61/003/010/011/036
Relative intensities of nuclear... B111/B138
too weak to allow experimental dEtection. It has been found that the
spectrum multiplicity may be determined from the number of energy levels,
from the level intersection points, from the superposition of wave
functions, and from the position of the r-f coil axis with respect to the
principal axes of the gradient tensor of the crystal's electric field.
V. 1'4. Zaytsev is thanked for a discussion. There are I figure and 3
references: 2 Soviet and 1 non-Soviet. The reference to the English-
language publication reads as follows: M. Bloom et al., Canad. J. Phys.
36, 1286, 1958-
ASSOCIATION: Permskiy gosudarstvennyy universitet im. A. M. Gorikogo
(Perm' State University imeni A. M1. Gorlkiy)
SUB.,IITTED: May 3, 19 61
Card 4/4

GRECHISHKIN, V.S.
Nuclear quadrupole resomince aWc
.~r of the eletrical field
gradient in crystals. 35 hvA:l$0,'L-180'7 Ag 161.
1. Leningradskiy gooudarstvemyy universitet imenk-A.A. Zhdanova.
(crystals-Electric pr"apertieo)

36963
s/14i/62/005/001/009/024
E039/El35
AUTHORS: Grechishkin, V.S., and Kyuntsell, I.A.
TITLE: Line form distortions of the nuclear quadrupole
resonance caused by apparatus factors
PERIODlCAL: Izvestiya vysshikh uchcbnykh zavedeniy,-Radiofizika,
v.5, no.1, 19b2, 95-103
TLXT: The investigation of the shape of nuclear quadrupole
resonance lines is of interest in the study of the siructure and
dynamics of the crystal lattice. Calculations on the influence
of apparatus factors on reproduced shapes of lines are therefore
of practical value. In this paper is examined the question of
the optimum conditions for recording derived absorption signals.
Calculations are also made on the influence of the time constant
of the pilase detector on recording different derivatives. The
behaviour of the coefficients of the first three harmonics
in a nuclear quadrupole resonance signal is calculated both for
the Gaussian and Lorentzian form of lines. The results of these
calculations are given graphically. It is shown that, in both
Card 1/2

Line form distortions of the ... s/141/62/005/001/009/024
E039/E'35
the Gaussian and Lorentzian casesl at the frequency moduliltion
with a 40% correction, it is essential to record tile third
derivative of the signal. This results in an improved signal-
to-noise ratio. It is of interest to note that in the case of
P - C6H4CF2 for the transition from the a to the p
modification at 47.8 OC there is a gradual change in the form 'of
the absorption line from a Lorentzian form to one intermediate
between Lorentzian and Gaussian. The circuit diagram of the
spectrometer is illustrated and briefly described. The
experimental results closely follow the theoretical predictions.
It is also shown that the time constant of the phase detector
influences the position of the centre line of the recorded
signals of different derivatives.
There are 7 figures and 1 table.
ASSOCIATION: Permskiy gosudarstvennyy universitet
(Perm State University)
S13BMITTED: May 22, 1961
Card 2/2

s/lai/62/004/008/033/041
B108/B102
AUTh'O:i6: Grechishkin,:V. S., and Soyfer, G. B.
TITUE,: Change in the multiplet structure of the nuclear resonance-
spectrum.in chloral alcoholate crystals
P1.12IODICALt Fizika tverdogo tela, v. 4, no. 6, 1962, 2266 - 2269
TL4T-. The temperature.dependence of the nuclear quadrupolo resonance of
C135 in CCI (;(OH) 0 11 'was investigated in the interval 77 - 520 0K.' The
3 2 2 5
techniques are described in earlier publications (FTT, 3, 2390, 2791, 1961~
0
The spectrum which was observed up to 39 C shows an-ab~ormal behavior.
The lines -v and %j have nearly the same temperature coefficients, line
1 2
0
1~ has a considerably greater coefficient. At about 12 G the triplet
tLns into a doublet. This-behavior is attributed to a change in the
interatomic distances in the molecule. Piezoelectric resonance signals
were obs-erved which are proof of piezoelectric prope rties of chloral al-
coholate. The proton resonance signal at room temperature in a field of
Card 1/2

S/181/62/004/008/033/041
Change in the multiplet ... B108/B102
5000 oe has a fine structure. This is possibly related to a retarded
rotation of the methyl groups. There is 1 figure.
AS30CIATICN; Permskiy gosudarstvennyy universitet im. A. M. GorIkogo
(Perm' State University imeni A. NI. GorIkiy)
SU&IITTED: April 21, 1962
Card 2/2

SIIB11621004101010611063
B102/B104
AUTHORSt Grechishkin, V. S., Zlatogorskiy, H. L., and Osipenko, A. N.
TITLE: Magnetic screening of the Na 23 nucleus in alkali-halide
crystals
PERIODICAL: Fizika tverdogo tela, v. 4, no. 10, 1962, 2987 -.2989
23-
TEXTt The magnetic screening of the Na nucleus, not hitherto
investigated, was now studied by measuring the chemical shift of the
nuclear magnetic resonance signal. The measurements were made in a uniform
magnetic field of 5-8 koe (instability 10-5jhr, nonuniformity 10-6 /cm3),
the n.m.r. signals were observed at 6-5 Nc.* The following values for
the magnetic screening a were bbtained: 6 . -io4 . -(0.21t0-05),
exp 23
-(0.27tO-O7)1 -0.41:t0-10), -(0-42tO.12) for Na in NaF, NaCl, NaBr, and
NaI respectively. For NaCl, a was calculated on the basis of the
Kondo-Yamashita model (J. Phys. Chem. Solids, 10, 245, 1959) and the
value of -0.36-10-4 obtained is in good agreement with experiment. Also
the mean excitation energies of the outer np electrons were calculated
Card 1/2

S/181/62/00,1,/010/061/063
Magnetic,screeningipf the... B102/B104
and io.6, 7.8, 6,.6 and 5-4.ev were obtained for NaF, NaC1, NaBr qnd
NaI. The components S of the overlapping integral (52 . S2 + S-) were
p B P
0.045, o.o4q, 0.048 and 0.044 for the above crystals. There are 1 figure
and 1 table.
ASSOCIATION: Permakiy gosudarstvennyy universitet im. A. M. Gor1kogo
(Perm' State University imeni A. M. Gor1kiy)
SUB21TTED: June 19, 1962
Card 2/2

S/141/62/005/003/005/011
E032/E514
A*_IMORS: _Grec-hishkin, V.S. and Soyfer, G.B.
TITLL; Influence of crystal lattice defects on the intensity
and form of nuclear quadrupole resonance lines of
crystals
PERIODICAL: Izvestiya vysshikh uchebay1ch zavedeniy, Radiofizilca,.-
V.5, no-3, 1962, 508-515
TZ,~T: The spectrometer described in previous papers
( Uc 1'. 6 : P T E ,2, 31, 1959; Ref-7: Vestnik LGU, 10, 14, 1959) was
used in the observation of the nuclear quadrupole resonance. A
si.~q,)Lc self-quenclied super-regenerator was developed for the
detection of Br rcsona ces (200-300 MC/SCG); it is'shoi-m in Fig.l.
A go
~ study was made of Co y-rays and X-rays (40 kV tube) on th *e
intensity and width of NQR lines of the following crystals:
Kcio NaCIO Mg(clo )
3t 31 3 2' Ca(C'03 21 Sr(CIO 3 21 11-C6Hit Cl 2' o
U
CC1 3COH-H20 and C 2C1 6* Doses of 150 000 r and 300 000 r (Co
y-rays)-were given and the intensity and width of the lines
determined. This was repeated ivrith X-rays (except for tha last
~,Ko crystals). It was found that the experimental errors are very
Card 173

Influence of crystal lat~tice s/141/62/005/oo3/005/011
E032/1';514
dependent on the uniformity and illuiaination of the specimens and
the trorking conditions of the super-regenerator. When plotted as
a function of time, the line intensity and width decreased -orit'a
duration of irradiation. I-rhen the measurements were repeated
afcer an interval of the order of ten days, a partial restoration
if the signal was observed. 8Measurements were also made of the
intensity of NQR lines of Br 1 in n-C6 HI,Br, as a function of the
coacentration of the following impurities: m-C,H (IN
Q t 4
C-Cl, and C H "IT = NNRC Ii Of these four ii~.-purities the flrbt
0 0 6 5 6 5'
naa the largest and the last the smallest effect on the line
intensity. The exporiiaelits were repeated with single crystals of
"Or The general conclusion is that NQR studies can provi6e
.1-C6T. ~2
(,uantitative data on cry'stal defects,provided a calibrated Spectro-
,;,.eter is- eraployed and particu'lar care is taken in the preparation
uf ~~paciriens. However, the accuracy of the results is not
a.1,to--et:ier satisfactory in view of the inadequate stability of the
--,-)-jaratus and the titrie necessary to complete the measurements. The
Ij calibrated. There are
must be continuously
Ca~d 2/3

infiuence of cryntal lattice s/141/62/005/OC3/005/011
E032/E514
4 figures and 1 table.
ASSOCIATION: Perinskiy gosudarstvennyy universitat
(Porm State Univeraity)
3 1 IT T E D October 23, ~----J 'A
1961 4
-P
2 n4p 3m
L
1 7j C2 C2
2np 3 nqD
Ti
4 Im
43K +2406
Fig.1 F: 70
30K
4,47 6,wJn
90no
Of AIMC)
2,7Mom fooo
no T
Card 3/3

. 45625
s/14i/62/005/oo6/009/023
r0 Eo~2/E414
AUTHORS: Aynbinder, N.Ye., Grechishkin, V.S.
TITLE: Energy levels an d relative line4nie'nsities in thO
case of nuclear spin resonance in.single crystals
PERIODICALS Izvestiya vysshikh uchebnykh zavedeniy. Radiofizika.'
nb.6. 1962, 1123-1129
TEXT: One of the'ways of approaching this problem in to determine
the resonance frequencies experimentally for.an 'arbitrary.
orientation.of the crystal and estimate the polar angles of the
external magnetic field relative to the priricipAl axes of the
crystal, and then adjust,the crystal until. the' require d direction
of the external field relative to the crystal is achieved.
A calculation was therefore carried out of the.nuclear spin
resonance energy levels in the case of 3 = 3/2 and small
departures (of the order of 100) of tho direction of If.' from each
of the.principal axenlof the electric field gradient tensor of the
crystal.. The specific substance taken for this calculation was
Na2S2O1;1'5"2O- The method of zer-o-spUtting cone (C.Dean., Phys.
Rev. v.96, 1954, 1053) is employed and extended to the case of.an
Card 1/2

s/14I/62/005/0U6/U09/U23.
Energy levels and relative ... R032/Z4i4
arbitrary magnitude of the nxter-Tial magnetic field. Expressions
are obtained for the I'mirror" erierey levels and the associated
transition intensities in the seecial case ~ .= 0 , where 11 ie
the asymmetry parameter. The zero-sTA-itting paranteters a, P.and
), are tabulated for spin J = 7/2- Thetheoretical calculatiomt
have alqo been compared with expe'rimental dat& for Sb-1-23 (J = 7/2)
In a single crystal. of SbC'13- 7he transitions 1 1/2 to + 3/2 - -
and + 3/2 to + 5/2 have beei) A).-5Pj-v(jd leading to an a.Rymmetry
par-allieter TI = 16%. Calculated for the polar anp-les of
ia Uw principal-axes -~4ysterh wro found to be in' agreement will,
Values. There arov 8,rigures and 1 tab)e.
ASSOCIATI ON: Permskiy gomtdai-otv,~n-iyy nitiversitet(Perw 'Itatv
UlAiver.si ty)
S u i1: L) M ,., y -) 49 6 2
C a, rcl

GRECHISHKIN, V.P.
Watch type OSKH tachometer* Tekst.prom. 22 no.10:77
o 162. (MIRA 15:11)
1. Glavnyy spetsialist Gosudarstvannogo komiteta
Soveta Ministrov RSFSR po koordinataii nauchno-issledovatel'skikh
rabot.
(Textile industry-Equipment and supplies)
(Tachometer)

43367
S/056/62/043/005/024/058
B102/BI04
AUTHORSt Grechishkin, V. S., Kyunteell, I. A.
TITLEi Relative intensities of nuclear quadrupole resonance lines of
Sb 121 in antimony trichloride
PERIODICU: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 43,
no. 501), 1962, 1712 - 1713 .
TEXT: The nuclear quadrupole resonances of Sb 121 in SbCl 3 crystals are
calculated for the transitions between the levels 1 (m. t1/2), 2 (m - t3/2)
and 3 (m- t5/2)t V(t1/2--?,t3/2), v(t3/2--,~-W2), and v(tI/2,t5/2). The
latter is a "forbidden" one (Z. Phys. 130,'385, 1950- Each of the states
is twofold degenerate. eQq zz , 376.902 Mc for Sb 121 in SbCl,I Q being the
-nuclear quadrupole moment and q zz the tensor component of the electric
field gradient of the lattice. For polycrystalline $bCI the probability
2 2 2 3
ratio of the three transitions is W 1,2 SW 213 r1w 1,3 0.59 : 0.0058. At
Card 1/2

S/056/62/043/005/024/058
Relative intensities of... B102/B104
room temperature v1,2 was observed to be 58-156 Me with an oscilloscope
signal-to-noise ratio of,,5. At +16.60C v 2,3 was 112-596 Nic with a signal-
to-noise ratio of 1.6. The ratio W 1,2 01 2,3 - 1 t 0.54, which agrees well
with the theoretical ratio. Because of its low intensity, the %~ 113 transi-
tion cannot be observed in the 170 Me spectrum. Therefore an indirect
method was applied. The frequency of the transition was determined from
the temperature dependenbe of the resonance signals measured. A 20-w
generator for the 170 Me band was constructed. When a saturating field of
-170-5 Me was applied, a reduction of the v 1,2 intensity by a factor of
0.83 could be observed. In this case the "forbidden" transition is
saturated and the difference in population between the levels 1 and 2 is
reduced. There are 2 tables.
ASSOCIATION: Permskiy gosudarstvennyy univer8itet (Perm, State University)
SUBMITTiZs April 30, 1962
Card 2/2

GRECHISHKIN, V.S.
Progress of radio spectroscopy. Friroda 51 no-512O-24 My 162.
(MIRA 150)
I* Pormakly gosudaretvannyy universitet im. A.M.Gorlkogo.
(Microwave speptroscopy)

L.17o?2-63- EviT(1)/EWP(~q)/EWT,(M)/BDS S/192/63/00h/002/002/002
AFFTC/~SD. JD
hishkin-N. S. and Kyuntse 1. A.
AUTHOR: Grec
TITLE: Nuclear quadrupol of antimony tals
ar resonanci jag&Qm, in monocrys
of SbC139 2SbC1 3*C 06i and 2SbC1 3*,C~%
PERIODICAL: Zhurnal,strukturnoy khtmil, v. 4, no. 2, 1963,269-271
121 123
TEXT: inasmuch as there are different spins for Sb and Sb It was
indicated that it should be possible to observe several transitions in the nuclear
quadrupolar resonance of these isotopes and that it should'also be possible to
determine the parameter of asymmetry )j: from a measurement of the frequencies of
these transitions. A study yas therefore made of the nuclear quadrupolar resonance
of the antimony isotopes in monocrystals of SbC1 , 2SbCl *C H and 2SbC IC H
3 3 6 61 13 8-
1r. the latter two -samples nuclear quadrtipolar resonance was determined for e
first time. There are 4 figures and 3 formulas.
A530CIATION: Permskiy gosudarstvennyy universitet,(Pem State University).,,
S*JBMITTED: May 19, 1962
Card 1/1

S/ 1 a 1/63/065/003/038/046
B102/B180
AUTHORS: Grechis~kinp V. So, and Kyuntsell, I. A.
TITLE: Temperature dependence of the nuclear quadrupole resonance
frequency of Sb 121 in some single crystals
~PERIODICAL: Fizika tverdogo tela, v. 51 no. 3, 1963, 948-949
TEXT: To produce the quadrupole temperature standards needed for high-
.accuracy measurements (tO.0020K) it is very important to find crystals
with a high temperature coefficient of nuclear quadrupole regonance. The
authors measured v(T) the temperature dependences of the Sb 121 resonance
frequencies, between 77 and 340 0K for four monocrystalline samples:
SbCl 3 M9 2SbCl 3CA (2), SbCl3C6H5 C2H5 (3) and 2SbCl 3C6H 5C6P.5(4). All
the crystals were grown by the Bridgman method. The results (Fig.) show
that some of the SbCl compounds have an abnormally high temperature
3- 0
coefficient, always higher than (1), except for (4) which undergoes a
Card 1/3

S/ 1 a 1/63/005/003/038/046
Temperature dependenoo.of the nuclear ... B102/B180
phase transition due to which the coefficient drops from 11 to 4.~ kcs/deg
The coeffici ent of (1) is 5 kcs/deg, of (2) 11 kcs/deg, and of (3) it
Is highest: 17kc/deg. With (4) piezoelectric resonances were also
observed and a proton resonance was observed with all crystals. (3)
holds out promise for the production of temperature standards. There is
1 figure.
ASSOCIATION: Permskiy gosudarstvennyy universitet (Perm state University)
SUBMITTED: November 12, 1962
Ca rd 2/3

Illempurature dependence of tho nuol(jar
I.MC
lu
Card 3/3
S/ 18 1/63/005/003/030/046
B102/BlSO
Fig.

51'ir~13 11__~'___
S/141/63/oo6/901/003/018
r.,14o/E435
AUTHORS: Grechishkip.V.S., Zlatogorskiy, M.L., Svetlov, Yu.G.,..,,'
TITLE:, Apparatus for.observing broad nuclear magnetic
resonance.lines
PERIODICAL; Izvestiya-vysshikh Uchebnykh zavedeniy. Radiofizika,
n6a, 1963,136-41
TEXT: in the study of nuclear magnetic resonance in solid bodies
the lines are very broad-because'of magnetic dipole-dipole and
quadripole electric interactions. The stability requirements on
the apparatus are le'ss than for the*observation of proton chemical
shifts but thd sonsitivity.required is much h1gher, since signal.
absorption in solid bodiesis less than in liquids. A wide range
of frequencies.is also required if a.large number of different
nuclei are to be measured. Further the field intensities
required vary widely as a function of the spin relaxation times..
The article describes an electronic (vacuum tubel instrument for
measurements on 1i1, H2, U7, F19, Na23, A127, Br8l, B11. The
radio frequency can be varied.from 3 to 22 Mcs, the magnatic,field-
-from 50 to 7000 00- Examples of curves taken in various plastics
and single crystals are given. A radio-electronic device with
-Card 1/2

S/120/63/000/001/018/072
E039/E320
AUTHORS: Grechishkin--V.S, and Soyfor, G.Bo
- f7
TITLE: An autodyne aircuit,ror observing nuclear quadrupole
resonance of ii0topes oC bromine ond iodine
menta, no. 1, 1963, 87 88
PERIODICAL: Pribory i tekhnika ek-speri
TEXT: This is a description of an improved two-stage autodyne.,
circult w1th twice the power output,:and twice the signal/nolso ratioi;
Schawlow
of a similar circuit described by (Jo Chem. Phya., 1954,
22, 1211). The use of a two-stage circuit reduces the effect of
interelectrode capacity and enables higher frequencies to. be
obtained* It is.suitable for making nuclear quadrupole resonance.'.
(NQR) measurements, in the range of frequency from 146 to 300 Me/s.
:;:The sample (volume 0.4 CM3) is placed in a coil at the end,of the
grid Lecher and osci-llations.are.obtained when the length ofthe.-
grid Lecher than and the length of the cathode
is less _X/4
Lecher more.than' ~Allk . .The aut,odyne output is fed into a 6* in
'(6ZhlP) low frequency amplifier and presented on an oscilloscope..
:and recorder., The super-regenerative cirgyit is irribed briefly--'-'
and the resulti-of NQR measurements,'on- Br and I are showna~.~,
Card 1/2

AYNBINDER, N.Ye.; GRECIII3110, V.S
Nuclear resonance energy levels in aingle crystals in the presence
of magnetic and quadrupole interactions. Izv, vys, ucheb. zav.; fize
no.5:27-31 163. (MIRA 16: 12)
1. Permskiy gosudarstvennyy universitet imeni A.M.Gorlkogo.

GRECHISFIM, V.S.; SOYFER, G.B.; SVETLOV, Yu.G.
Use of the nuclear quadrupole resonance i;:uthod in studying phase
trimaitions in certain crystalo. Izv, vyo. uchob. zav.; fiz. no.5:
32-315' 163. (141RA 16:12)
1. Permskiy gosudarstvennyy universitet im,,mi A.M.Gorlkogo.

ACCESSION NR; AP4009475 8/0051/63/015/006/0832/0833
AU771OR: Grechishkin, V.S.; Kyuntsell, I.A.
TITIX: Frequencies of nuclear quadrupole resonance of Or 79 and Br8l in Menshutkin
complexes
SOURCE: Optika I spek troskoplya, v.15, no.6, 1963, 832-833
froNCI TAGS: nuclear quadrupole resonance,'MR, 'bromine organic complexes, Dr79
Br I, antimony bromide complex, benzene derivative, benzene complex
ABSTRACT: Complexes of antimony bromide (SbBr3) with derivatives of benzene and
naphthalene, which were first described by B.N.Menshutkin In 1912, exhibit a num-
ber of interesting properties. At present there is enhanced. interest in molecular
complexes in connection with search for organic semiconductors. ' In th resent
study there was Investigated nuclear quadrupole resonance of Br79 and I In a
B
number of molecular complexes with SbDr3. For the most part these were complexes
with benzene and benzene derivatives. The nuclear quadrupole resonance was ob-
served by means of a superregenerator with external damping (V.S.Grechimhkin and
G.D&Soyfer, PrE, No.1,87,1963). The spectra were displayed on an oscilloscope
r_,A 1/2

AP4009475
screen and the absorption frequencies were measured by a heterodyne wavemeter. The
results obtained at room temperature are tabulated. For most of the complexes
there are observed three WQR lines of Br79 and Br6l. The NQR frequency in propor-..,-
tional to the number of unpaired p electrons. Orig.art.has: I t, ble. 1-1
ASSOCIATIONS none
qlfPMT4-rM- 2VAn,92 1111TR AM- n2X&nAA

GRECHISRK Y.S.; SOYM,, G.B.
Change of the nultiplet nature of the nuclear quadrupole resonance
spectrum in crystals of octachloronaphthalene. Zhur.strukt.khimo 4
no.5:763-764 S-0 163. (MRA 16:11)
1. Permskiy gosudarstvennTj universitet imeni Goriko-o.
0

GRECHISHKIN, V.S.; AYNBINDER, N.Yo.
Quadrupole energy levels for certain spins. Izv. vys. ucheb. zav.;
radiofi-.. 6 110-4:729-737 163. (MIRA 16:12)
1. Permskiy gosudarstvennyy univers.1tet.

GRECHISHKIN, V.S.; KYWTSELI, I.A.
Nuclear quadrupole resonance frequencies of Br79 and Br8l
in Menshutkin complexes. Opt. i spektr. 15 no.6:832-833
D 163. (MM 17:1)

GRECHISHKIN, V.S..; KYUNTSELIP I.A.; SOYFER, G.B.
Use of nuclear quadrupole resonance for physicochemical analysis.
Zav.lab. 29 no.11:1310-1315 163. (NIRA 16t12)
l..Permskly gosudarstvennyy universitet.

GR.E(;HISHKIN,' V.S.; AYNBINDER, N.Ye.
Nuclear spin resonance. Usp. fiz. nauk 80 no-4:597-6)7 Ag
163. (MRA 16:9)

'ACCESSION NR: AP4018356 S1012CI64/00010011000510022
AUTHOR: Grechis.-J . V. A!,; Soyfer, G. B.
TITLE: Apparatus for observation of the nuclear quadrupole resonance
(a review)
SOURCE: Pribory* i tekhnika eksperimenta, no. 1, 1964, 5-22
TOPIC TAGS: nuclear resonance, quadrupole resonance, nuclear quadrupole
resonance, quadrupole resonance investigation, quadrupole resonance
investigation equipment
ABSTRACT: Well-known phenomena of the nuclear quadrupole resonance are
briefly described. The effect of apparatus factors upon the quadrupole -resonance
curve shape is discussed. The application of a squegging oscillator in a super-
regenerative spectrometer is described. The principle of Zeema-,x modulation is
also mentioned. Stationary methods for observation of the nuclear iquadrupole
Card 112

ACCESSION NR: AP4018356
resonance are set forth with a brief discussion of a number of electronic circuits
used for this purpose. The principal connection diagrams of various self -
quenched and externally-quenched superregenerators are triven. In discussing
pulse methods of studying the nuclear quadrupole resonance, their complexity is
held as their chief shortcoming. The article is concluded with a brief description
of the Zeem. art effect in single crystals and a discussion of automatic Zeeman-
spectrometers. The supporting material for this review is taken entirelyfrom
Western sources and some Soviet sources published in 1959-63. Orig. art. has:
15 figures and 12 formulas.
ASSOCIATION: Permskiy gosudarstvenny*y universitet (Perml State University)
SUBMITTED: 15.Tu163 DATE ACQ: 18Mar64 ENCL: 00
SUB CODE: PH, NS NO REF SOY: 022 OTHER: 071
Card

ACCESS101 NR: AP4019269
8/0192/64/005/001/0053/()058
AUTHORS: Grechlemal,.m Lxyuntselle I.A.
TITLE: Nuclear quadrupole resonance In molecular compounds of antA-
mony tr1ohloAde and tribromIde
964t 53-58
SOURCE: Zhurnal strudturnoy khIm11, V-5. no.l. I
TOPIC TAGS: nuclear quadrupole resonance, antimony tri 'chloride,
tribromide, crystal structure, chemical bond, Hammett constantg
antimony
ABSTRACT: Nuclear quadrupole resonance is used as a mechanism for
studyinG the distribution of a heterogeneous electrical field In mole-
cular complexes, which might be useful as organic semiconductors. The
quadrupole nuclei In this case fulfill the tole of some experimental
charges, and If there are several of theme charges In the conplex,
there Is a possibility of measuring tho'gradleat of the elsolgical
12l
filij at various points. Nuclear quadrupole resonance of 01-,rjo 8b g:
Sb and Brlylln crystals of 27 moleouW compounds of 8b013 and
Card

ACCESSION NR: AP4oi9269
I
,zbBr3 are identified. The constants of the quadrupole reaction and
asymmetry parameters are determined. The temperp-ture dependence of
frequencies Sb121 was studied* The rates of mean frequencies of ro-
tary oscillations of molecules are derived. Observation of the quadru-
pole resonance Itself In the complex Indicates that it Is free from
heterogeneous crystals. Nuclear quadrupole resonance signals are not
observed In the partial decomposition of the specimen. Data on nucle-
ar quedrupole_resonance iftdicites strong deformation of molecules of
SbO13 and Sbl~6-7. The variation of constants of the quadrupole reac-
.tion can be combined for a series of complexes with the Hammett con-
stant for corresponding substitutes. Oomplexing leads to a strong
variation of the character of the network oscillations, In many casew
.It should be known which at-Ogg are acceptors In the complex and.vhich
are the donors. In the complexes of B.S. Menshutkin (Droyny*ye sis-
.temy* trekhkhloristoy I trakhbromistoy sur'my* s benzolom I yevo za-
meshchennyftl proisbodnyftl. SPb., 1912.)(0 v1iyanii zameatiteley na
nekotory*ye reakstil bensola I yego same shchenny*kh -7c~.zbo,1nyfth.
SPb.t 1912,) the antImmW atom can be the acceptor, Zio chlorino atom:
or the bromine azo.% c4n alco be an,,si'ooeptor if the correepouding by-
Cord 2/3

r7
1_40CESSI NR: AP40192G9
drocarbon is -the donor of electrons. Thus, it is impossible to have
i a. single schematic of forming Menshutkin complexes. "In conclusion
-tbz tLuthars are grateful to student IX. Shab=-ovc7 for his help with
some Mfiasu"Ments." Orig. art. has: 3 tabloas 2 figures. and 7 aqua-
tions.
'ASSOOZATIOI: Powndcly gosudarstwowyly wdveraltet (Peru' State
VAM AM 8 240904C =%I 00
A.
WS COM CK IM IV m on C43",
card 3/3

GRECPh;;RlKp V.S.; SOYFER, G.B.
Nuclear quadrupole resonance in chloro-darivativets of impthalene.
4mr. strult. khiza. 5 no.6:931, Pl-!) 164. NIAIRA 18:4)
1. llermskiy frosudnratvannyy iiniverii-tot.

Ar.CEW10H VRs AP10 O/Mal/64/006/04PI238A240
AUTHURSt Orechlobidnp To So; Alatogorsklyp N o Le
'TITIEt Wluence of imparitim on the chemical shift of nuclear npatic re"nom
,signals of sodium 23 in alkoli4mlide orptals
'~SOURGBs Fisika tvardogo toU. vo 6,, no, 49 2964p 1238-12W
TOPIC TAGS i nuclear magnetic resoamneej Impurity chinical. I shM,, "sodium 23,p
alkali haide crystal
ABSrRACT s The effect of impurities on the MM - cbeadca abin of 1j&23 in 'atiali- -
Imlide crystals was Anventigated onerimentallye The moVdtude of the cbmical
:shM
Vol'
where N~ and -J are Va M frequenlos with a fixed wtwnal mapAic fiad In thi
p
M-.Mbal MA in a d1ute 002atlea *Lvdy*. The mm of aqawm *"ions of
Ic
'C"

Acczmw Nits APho28W
sodium chloride as a reference signal for measurement of 6 in alksli-hallde
that ~o concentration dependence was observed.
arptals was indicated by the fact
:The chemical shift was measured relative'to the opeous solution of sodium chloride
in solid solutions of .,VaCl NABr " varying proportions* The aqmIxental value
of do was reduced by roughly 295 times with only 10% impurityp and with larger
concentrations (5%-70%) positive oldfte were obtainede This is evidently due to
the secord-order quadrupole effect# since the introduction of bromine ione Uto
the sodium chloride lattice dl=Wbs the cubic xyxm~tz7 about the sodium nuclaie
Orig. art. has s 7 squtiono and I table.
!ASSOCIATION# Pavskly' NmM wdvereltat .(PWmY State Vniversity)
9U
D= Ar-Q IRCLS 00
'SUBKMTEDo 070oW s 2?APr64
SUB 0ODZs ND W WF# 003 or= 1 004
OP
Cmd 2/~

ACCESSION NR: AP4039675 s/b1al/64/bo6/bo6A&lAau
AUTHORS: Aynbinder, K. Ye.; Grachishkin, V. S.
TMZ: A method of orienting monocrystals in quadrupole resonance
!SOURCE: Fizika tverdogo tela, v. 6, no. 6, 1964, 1821-1824
!TOPIC TAGS: nuclear quadrupole resonance, quadrupole coupling constant,,
asymmetry parameter, electric field gradient, spin Hamiltonian
ABSTRAM, A method is given for determining the orientation of the principal
axes of the electric field gradient tensor in a monocrystal for spin I=5/2. The
polar angle 0 and azimuthal angle 0 of the external magnetic field H in the
A
i principal azis system are found from the equations
co
C-A
col 21
where
A D=
30
V.-, I 1 4 - -
kR=
XA.

ACCESSION NR:
AP4039675
and fL is the nuclear magnetic moment. The quadrupole coupling constant o%,,
-and' thoi asymotry parameter are found experisentally with-no magnetic field.
Diagonalizing the spin Hamil Lian joetrix: leadi to a sixth order secular'4qvistici
which can be written in the forn -k3
This is also the expansion of
XJO
where the energy eigenvalues
-be expressed in terms of the experimentally
W oil
observed resonance freque i
1-+-2,. 3% 4- 4,4
2,z 3,3 274 -,J;
=6(,1-4 -3,2-2~4-
(-51, 4vi 3,, 20,
d
V

ACCESSIOU NRt AP4039675
Thus the coofficiento a and a4, can be f6und experimentally. It is concluded
that 0 and 95 can be aotermilhod within 0.50. Orig. art. haso 3.1 equations.
ASSOCIATION: Permokiy gooudarstvenny*V universitot ime Ai M. Gorlkovo (Pormok
State University)
SUBMITTEDs 25Nov63 DATE ACQ: 19.Tun64 ENCLs 00
SUB COWS NPISS NO RIW SOVx 001 OTHER: 003
Card.

ACCESSION NR: AP4043387. s/olsIA4/006/008/2528/2530
AUTHORS: Grechishkin, V.. S.; Gordeyev, A. D~
TITLE: Quadrupole relaxation' in tetrachloronaphthalene crystals
SOURCE: Fizika tverdogo tela, v. 6, no. 8, 1964, 2528-2530
TOPIC TAGS: organic crystal, quadrupole relaxation, nuclear quadru-.
pole resonance, chlorine, line splitting, spin spin relaxation
35
ABSTRACT: Nuclear quadrupole resonance of the C1 .nucleus was in-
vestigated in 1,4,5,8-C 10H4 C1 4' A frequency modulated super-regen-1
erator waWused to observe the nuclear quadrupole resonance (NOR)
W. S. Grechishkin, PTE, no. 2, 31, 1959). Two absorption lines.
were observed at 34,830 and 36,234 Mc for 291K and 35,238 and 36,768
Mc at 77K, with a considerable splitting (1.53 Mc at 77K and 1.404
Mc at 291K)i To explain this effect, the sample was investigated
in an NOR spin-echo installation. Measurement of the spin-spin
Card 1/2

ACCESSION NR: AP4043387
relaxation time has shown that this time differs for the two NQR
lines in the tetrachloronaphthalene,:thus indicating the presence
of strong intermolecular interaction in this crystal. It is men-
tioned that such crystals very frequently have piezoelectric pro-
perties. Orig. art..has: 1 figure.
ASSOCIATIONs Permskiy gosudarstvenny*y universitet (Perm'State
University
SUBMITTED:, llMar64 ENCL: 00
SUB CODE: SS
NR REF SOV: 001
OTHER: 002
Card 2/2

SUB CODE: GP# NP ENCL 00
Card 2/?