SCIENTIFIC ABSTRACT ALTSHULER, L. M. - ALTSHULER, N. S.

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AL-TSH=R, L. M. "Analytical Mtermination of a Tube Temperature in a Half- Intinite Massive." Report submitted for the Conference on Heat and Mass Transfer, Minsk, BSSII, June 1961. ALITSHULLPR, L.M. Temperature field of a cylindrical source in a half-limited block (with awnnary in English]. Inzh.-fiz. zhur. 4 no.3* 64-71 Mr 161, OAIRA 14:8) 1. Seliskokhozyaystvennyy institut, g. Leningrad. (Thermodynamics) GOLIDBERG, Prinimali uchastiye: MLOCHNYYJP V.B.; ZHARIKOVA, V.I. Macroscopic kinetics and the mechanism-of urea syntbesis from ammonia and carbon dioxide. Khim.prom. no.91638-642 S 162. (MIRA 15:11) (Urea) (Ammonia) (Carbon dioxide) GOLIDBERG, N.A.; AWTSHULER, L.N. Macroscopic kinetics and mechanism of the Wth?ais of urea from ammonia and carbon dioxide. Klilm.prom. n0-104-57 Ja 64. (MIRA 17:2) x it v a id i a I ~Lj_ 00 A 00 SO PSOCSSISS AND M01#1111 0*9110 00 -A 4 004 008 ell *0 00 -V es Pon" Nwh" ".ALMA-u4=.md :6V T&VIMMAN (zavod. lAb.. Im. 7, 1270-1283)~ P, T. 040 it APP&Mtukis*~~ P Is it it p a 41 al AS do 0 -0 0 *00 -00 *a "0 0 -00 -00 LOO =00 Coo coo see moo 4100 see hoo too OCIALLMICAL UTtIOURN CLAIVOICATION Cleo goo. 11.11SL.' 40. gw~ WOO It sdn*09 .. I solabi .90 O"T 009 allallic"1 .11411 W O"T III u 6 M IF IS AT 00 AS v If III a it a, ct ic Ic ', Im b~:, 0 040 6 0 000 woofl 000 000 a "s, 0, a '0 0 woo '90 '", 60 o1 616600 0 L 0 0 000 6 & 000 0,000 000 Goo -00000 0 * 0 0 0 lp Al; - " 1 /~4 M- (.11, ;, , ! , .- t. . - I - i r !,.% .:,, .-M -GU- AWWWW W1 VOW 'r-M d"$m Umb MA A 1939- i V AItKhok;.,Ond V. A. ZukelmAn (Idt'j- "ah" r%M,484., J, J. it. O$A f 1 001, 41, 41 W-Mw SO&OR lim"re 0 Qoawbsd PA9 under W IdUMCNINA&S. L.X. A114uler and M. 1'. Sperstuiltay - 1' 6i l H -mtnik Mvta lopr*vAyahIenn x M, No. 1, pp. 15-21). ( ~ Rtadan). FArlier studios of the surface finish, structure and i4w. retiintance, of the ground sleel surfaced which am so Important in tho manufacture of measuring instruments are briefly referred to. X-rM&Y inveall ations by the authors on 1-5% chromium tool stool ' "Mm 1746ra or quenching or ofter quenchirig anti artificial aping *#I a a% 180'(. for 3 hr showed that In both V= "viv had at IrAxt 'b t th t t d t d ft h ff t 40 e s ruc ure pro u o a gh- ure empons e e ec % I . 0 a 11 t , ju y g :to t(-mp(-rirtg an the surface Inyers of the etpecimens. Coarve-grintfing of quenelied steel produced an sustenit c otmetti-a on the outer our- , o Jkm Inyer, below which successive layers showeml gradually diminish- *to Init temper effivis, the Isyera merging into the original quenchtil 0#1 .3 Istoel with a letragonsil inartensitle otrurfure. UP amount of %0 nuotenitc, found increased with Increasing quenching temperature of a the atcol loeing ground. The arithors conclisdo that the grinding of _ unquenchod steel do" not lead to the f6irmation of austAnvite. The X 14 Mown transformationx cauv otnvwv to lx, act up in a marfAvo lAver approximately 0-1 mm. thick. 'lliew xtrt*AK* inay ltqul to grinding reviously ot*ervqxl miuml crarks and th v also, account for the , k p wear-resistative of the 0-1-mm. surface layer of grounti-quenched steel. It is estimated that grinding causes localimd heating too C, for 5 x 104 sec. 71iiA very rapid heating explains the I above otructural changed observed in the surfAm layors of ground 2: quenched and unquonrliod ateels. .11 L A s it 8 NITALLURCOCAL U111AIM C11,411SIVICAMP - - , UT T 7 i is I =.. 09 k La it a I No it a 9 A ON % 1 6 O 0 #1 01; it 0 & a * 0 o 0 0 0 o o o 0 0 0 0 0 0 0 0 0 0 0 0 0 6 o 0 0 0 a I 0 SOO * - 0- *o,*o 4600041,00000 0000000* 0C 0 ; 0000,000 004 .00 411411 1o411 do 2190 '041411 afifo Cqqo So* goo a** 8`411410 4*0 goo =00 00 9 WOO lelf W"!,- 7 1 .11 . , 6 1 6 1 Is to U 13 As 11 4 It N 11 9 11 As 25 X V X IS AM 11 12 U As Z AS U a it a a 4) tj sm 4 I .1 11 .1 IS AM .1 Al 13 As AS A? A R, $-A V- TAW A -L--L~M 0 QC UP tt A A 1 4 1 A 1 -4 -1 L M 0 X P~ 00 60 -00 00 .00 00 g APWMW for NAPM I-FAY kmturf Analysis. L. Al't. 00 so so N. X .00 -00 00 No 0 00 00 046 ;;o 0 00 .00 00 0* 0 we 0 be 0 tie 0 00 tz, use too &-v Us' w Q- ist L-- Y-1 lww, I ~ As u 0 AV so a tl V( Ran ItOcKlarl ISO 411C 40 0 0 foe* 0 0 41 0 0 0 0 0 *'a 4 0 6 a 0 0 00 goes* 4 0 0 ei a 0 00 C* 0 00 so a 0 : : 0 : : : : * *0 : 0;0 0 0 0 0 0 0 0 0 4 0 0 0 0 * 9 0 9 oil ago** _1vq. bail 1113 kill 1011 IBP*41 ? P I L , If It u 111. to 16 It it Is 1 11 Im IV -4 -00 I Theory of tbe toteal" of atial baamv and the mothodt sigo of hisill'all"A Wulwal 160 1 J. )-4)WJ. Uhaoft. . I i 11"! PAVJ. (11.1 M, ~~l . IM Itht 11.4t W -00 0 Me llrvr-m" canditkins for atul pulAitile inctlimis of .00 Kilvinji she pM)Irtu ii rapid a-toy stnwtw*l &WyK* air see d W. The comfit;ms id luctislus; are Owlied ana. 0 J"' 'he rurtrut [of 111111, Itbatilla 411141 is flew sphel i ItIF the IM-11KII IMINIV &it "WAllicki. 41-1 nos W btatifi of site thirwy dcvri,4wd, a hisb-Iw*rrrJ intIN.1 of pholossraphinis cylindrical minples 14 dvvtlulwd. vilih age a vurtritt tal littly 1-3 irtm./wv. at 31I-W cAv. The 3:010 16fifortloatmill Inside require %*fly 10'4 it# 10-0 mV. r%. "iliv lo-tail, 44 flir app air SIVI-11, 11 11, lifith.u.1m too* ties Do.. 4a.'". 1W*o 41dast-ow .14 0 _11-1 -1 Is- u at OWWW' It al a Is I IMAIIA So two x 9 1 W 111 0 a a 0 v .061 * * * : as No -0 -0 -4 he e 0 0 0 0 0 o g 411 0 0 0 # 0 a 4 41 0 0 * 0 9 0 0 0 41 0 a : a . ~ 1 . . . . . . . . . . As a, t 0 . A. o UP : .3 Was writle 14" 0 begs, 119 non. in dians.. ini!"y bardentcl O V41 in a4 at W and tempered for 3 lits. at 1A0 ; the struetult was that of letrasonal nioricnalle with trac" of Mitiual 4b0 owteWts;tbemfwtbmrdw*60tafi4kotkwtlIC. Altef- 0 natins contact cotapretisions in the working surface of thr : ben bring aboat pleslk deformation of the martetiOle 0 0 J, grains giving rim to two aslidly syrnmetricst orientati-mo 00 the axis beint; prt- lkw t th f th ili ith l d i M rb 00 or o e via r an to nt Psai we o nS w the dlivdion of the contact cornismalloes. The surfacv lee flw inc=by 4 to 7 Rockwell to its. livaness ~ L. Th d , h= f 1 i 0 31 ~ . . c at e =ax .. , ounckmied that the awhanism of pbwtk dclointation in s zip* iron remains wwb&n#r4 in banicned bilb-C sttvl. N. TIMMI live tle '41 U Or IV " M..' -0 C.. M I 41K (PV it. 0 ~v n o n o, a Is saws nun art rl 1 .1% 0-0 009, 0 09 e 0 0 0 0 0 j I A S A 1 0 4 m 0 11 11 to 15 So '14 h 00 Omphkal dwoUkOdcol, old tt"AltiltIl-cmul"Gent "U"V" ,AA*k-f, amiL dad. Im it 14 VVISM ,,I, Im. ml-lis, -A. illtril- V914AVI tlictlu.1. .4 4 7 rmill owtlwjj%~. "tilt J."116,111.11 fArm1mv lit hish-Allily t,ttvi, AAA J At, ~y, m -o. 1-17, 1-1 U IL AT so is ; 4 c- v V a a TV to to It i IT If o9 A It 4 it uIs it dob 0 0 0 * 0 1a0 0 so *I* so 0 1, 0,60 : t 7- 460 6s :0 0 0 0 Is-.)--, Iil.o~ -1- At -,W-L a -jL, jr--W'-j"jj- S UD o1" 0 0 0 & 0 00000 : : *,: 00 -06 0 0 0 * 0 00000 zoo as* "so L. V. Sur Vexplosion dins un mifleil cam- prtsible plkstique. C. R. (Dok-LO%) Acid. '~vi ('RSS (N,.';.) U. 01; -202 (1946), fasOlefiral ex wave in .1 plaslic :7, T., con'! ''o :i!I It P cc, iV 56-34-4-14/6o AUTHORS: -AlItShulpr~# L. V., Krupnikov, K. K., Ledeney, B. N., Zhuchikhing Brazhnik, M. 1. TITLE: The Dynamic Compressibility and the Equation of State of Iron at High Pressures (Dinamichaskaya szhimayemost' i urav- neniye sostoyM~Iya pri vy9okikh daylaniyakh) PERIODICAL: Zhurnal eksperivental!noy i tooraticheskoy fiziki, 1958, Vol. 34, Nr 4, PP. 874- 685 (USSR) ABSTRACT: This work discusses 2 methods for the description of the dy- namio compressibility of materials, which are based upon the determination of the kinematic parameters - the propagation velocity and the mass 7elocity of the material behind the front. The measurement of wave velocities by means of donors being mounted in the path of the shock wave is relatively simple. In contrast to this the immediate obseryation of the mass velooity is impossible in most of the cases.The authors worked out 2 methods for the complex determination of the kinematic parame- Card I tars of the wave, namely the "method of repelling" and the The Dynamlo Compressibility and the Equution of State of 56-34-4-14/6o Iron at 111gh Pressures "method of slowing down". In the method of repelling the pro- pagation of a strong crack is investigated, which forms on the occasion of the reflection of a debnation wave at an elastic obstacle. The experimentally measurable quantities on this occasion are the wave velocity D and the velocity W of the displacement of the free surface of the obstacle on the initial part of the trajectory. W is approximately equal to the double mass velocity of the substance behind the wave front. The veloC- .tity of motion W is obtained by the material of the obstacle under the action of two different processeaq namely of the shook-like transition from the state Po M 0; v0 into the state PI; Y1, and of the subsequent isentropic expansion in the on- coating relief wave. The second paragraph duals with the-method of the investigation and with the experimental technique. The third paragraph reports on the dynamic adiabatic line of the iron. A table gives the parameters of all experimentally stated figurative points of the adiabatic curve of the shock in iron. Card 2,111 Within the whole investigated domain of the mass velocities I., The Dynamic Compressibility and the Equation of State 56-34-4-14/6o of Iron at High Pressures from U - 110 to U - 5,17 km/sec the linear relationship D -3,8o + 1,58 U is valid for the propagation velocity D of the shock wave. In the next paragraph the compression of iron at the temperature zero is computed and in the last paragraph the curve of the compressibility of iron is extra- polated to the domain of relatively low degrees of compression. The developed method allows to fix the dynamic adiabatic curve of iron with different initial d7ngity within the interval of pressures of from 4,jo5 to 5p 0 atmospheres. The dynamic adiabatic curve of porous iron with decreased initial density is in the diagram pressure - density considerably higher than the aliabatic of the compact material which speaks for the great influence of the thermic component in the shock-like compression. The authors derived an empirical equation of state of iron and ascertained the course of the curve of the cold compressibility unto the densities 9 -a 1,7yo. This work was carried out on the initiative by Ya.B.Zelldovich. The authors Card 3 also mention thecapperation of a number of other authors. 56-34-4-15/6o AUTHORS: - ALI_taWAE_1 _L. I. Krupnikoyj K. K., Brazhnik, M. I. TITLE: The Dynamic Compressibility of Metals Under Pressures of From 400 000 to 4 Million Atmospheres (Dinamicheskaya szhimaye,7 most' metallov pri dayleniyakh ot chetyrakhsot tysyach do chetyrekh millionoy atmosfer) PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1958, Vol. 34, Nr 4, pp. 886 - 893 (USSR) ABSTRACT: This paper reporks on the bases of a method for the experimental determination of the dynamic compressibility of copper, zinc, cadmium, tin, silver, gold, lead, and bismuth at pressures of from 400 000 to 4 000 000 atmospheres. In the case of all these materials the knowledge of only one dynamic adiabatic curve is not sufficient for the determination of the equations of state, which establish a relation between the pressure and the tempe- ratura and density. Yet the data on the shook-like compressi- bility at pressures of hundred thousands and millions of atmos- Card 1/3 pheres are very valuable for the verification of the theoretical The Dynamit; Compressibility of Metals Under 56-34-4-15/6o Pressures *f From 400 000 to 4 Million Atmospheres ideas on the behaviour of matter on ouch conditions. The authors investigate the transition of a shook wave with known amplitude frot the medium A into the substance B. The experi- mental method is discussed in detail. A plans shook wave caused by an explosion passed an iron shield to which samples of iron and of the materials to be investigated were pressed. The 3 series of experiments differ in the pressure of the shook wave in the shield. The propagation velocities of the shook wave obtained in these experiments are composed in a table. There are also given the parameters of the shook waves in the iron shields and 'the initial densities go of the in- vestigated samples. In all investigated metals, with the ex- ception of tin, the dependence of the displacement velocity D of the wave front in the undisturbed medium on the yelocity U of matter behind the ways front for U > 1 km/sec is suffi- ciently exactly approximated by linear relationshipsof the kind D - Of +X U. The degree of compression in a certain way 0 depends on the initial atom volume. In the case of increasing Card 2/3 pressures the wave velocity and the mean modulus of the shook- The Dynamic Compressibility of Uetals Under 56-34-4-15/6o Pressures of From 400 000 to 4 Million itmoapheres -like compression increase for many times. The authors thank A.N.Koleanikova, S.N.Pokroyskiy, A.L.ZhiryakOTp M.M.PayloTakiy and V.P.Drakin for their cooperation in this work. There are 5 figuresp 5 tables and 3 references, 2 of which are SOTiGt. SUBMITTED: December 28, 1957 1. Motals--Meahanical proportieB Card 3/3 SOV/2o-121-1-17/55 LUTHORS __Al_ttzhulev-~. %, Bakanovap A* A., Trunin, R. F. ...................... T IT 1Z-; Phase Transformations Whon 'Yater Ts Compressed by Strong Shook Vavea (Fazovy,,.,-e prevrashcheniya pri -zhatii vody sill- nymi udarnymi volnami) EZRIODICAL: Dok1ndy Akadenii nauk 30SR, 1955P '101- 121, ?!r 1,pp. 67-69 ( U 9 S "R ) ABSTRACT.- This paper gives a report on the shock-like compresvion of rater in the ranre of prescures from 20 000 to 800 000 at- nospheres. On this occasion the Idnematic parameters of the sho-,k wave, numely, its velocity of propagation D and mass velocity U of matter behind the wave.front, were measured. Because.of the laws of conservation of mass and momentum these parameters are connected with the density of the shock- like compression Q n Q D/(D - U) and with the pressure P M Q0DUI Q 0 denot ea tfle density of matter before the com- preesion. The method of investigation can be simplified very much when the shock wave is lead to the layer of 'the substance Card 1/9 to be investigated through shields of a material with known 3OV/2o-121-1-17/55 Phase Transformation ';hen Water Is Compressed by Strong 'Shook M~ves Hugoniot (Gyugonio) adiabatii~ line of the shock compression. The quantities measurable by experiment are the speed of the shock waves in the shield and in rater. The dynamical adia- batic line of water consists of two sections which with their ends fix the region of phase transition. The existence-of t1r phase transition is also proved by the decrease in trans- parency of water when a shock wave of sufficiently high amplitude of pressure P > P goes through. In the ca.se of shock waves with an amplituh of pressure P < P the. trans- parency does not change. There are 4 figures ana 5 references, 1 of which is Soviet. PRESENTED: January 17, 1956, by Yu. B. Kharitonov, Member, Acad.emy,of Scicnaes, USSR SUBMITTED: November 26, 1957 1. Water--Pressure 2. Water--Properties 3. Phase transitions 4. Shock waves-Velocity 5. Shock waves-Physical effects Card 2/2 3/056/6o/03D/03/14/03~ B006/BO14 AUTHORS: AlItshuler, L, V.9 Kormer~ S.-B., Bakanovat At At, Trunin, R,_E- _Z_~ -A A Leadvin the High- TITLEs Equation of State for Aluminum, Copper, and preseui~ Range PERIODICALs Zhurnal 4koperimentallnoy i teoreticheskoy fizikip 19601, Vol- 36, No- 39 PP- 790-798 TEXTs In tho present paper, the authors discuss the conclusions applying to aluminum, copper, and lead, as result from an equation deviating from 'the Mie - Grueneisen solid-state equation. The equation considered by the authors deviates in that it holds within a wide pressure- and temperature rangil, and that the thermal electron components of energy and pressure are taken Into account. Moreover, data are furn shed concernin,& dynamic compression ar aluminum up to pressures of 2.10 atm, and results of new easurementg of the compreavibility of copper, lead, and iron at 106, 2.1J# and 4-10 atm are offered., Numerous theoretical and experimental details concerning the adiabatics of these three metals are discussed in the introduction, with special regard to the collision adiabatics (Ye. I. Zababakhin, Yu. F. Card 1/3 82hl5 Equation of State for Aluminum, Copper, and Lead S/056/60/038/03/14/033 in the High-pressure Range BW B014 Alekseyev). Arfsatzes for the equation of state and internal energy have the form P - P int; :I- Ptherm + P exo and E - E int + E therm + Eexc (2). The first terms-of these sums characterize the interaction of atoms at OOK, the second teAsare thermal ones determined by lattice vibrations, and the third terms are -determined by the thermal excitations of electrons. In the following, the various terms are written down explicitly; and finally, the following explicit expressions are obtained for pressure and temperatures P vp P P int + v IT-T 0+E /Cv'1 + 14 %/q. (vo/v)'/'T' and vok ) + 'I AO(vlv,)112 2 Pint dir + E0+ C vp (T-T0 2 T . According to equatior. (1) for the dynaraic adiabatios P a .,Zak(T dynamic experiments permitted a determinatlon of preasure P and also of energy E ' E + 1P G G 0 2 G(vo - v)' Results of computations for aluminum are given in Table 5, for copper in Table 6, and for lead in Table 7. As is shown by Figs. 1 and 2, thermal. Card 2/3 1>1' 12'quation of State for Aluminum, Copp,;r, and Lead S/056/60/038/03/14,/035 in the High-pressure Range Boo6/BO14 pressure plays an import'ant part in the compression of metals by strong shock waves. For the pressures 216.1010 bars (Al), 388.1010 bars (CU), and 401-10 10 bars (Pb), the thermal pressure components amounted to 59-10 10 115-101 09 and 124olO 10 bars. For the same rOssurest the thermal energy com- ponent was 57% (Al), 6C% (Cu), and 69% (Pb~. Finallyp the authors thank A. I. Funtikov. R. V. Malyahev, and I. P. Dudoladov, as well as Professor K. Ao Semendya"r for their asaistance, adviceq and discussions, L~ D. Lprdau is alsonentioned in -this article. There are 2 figures, 7 tabloo, and 14 referencesp 4 of which are Soviet. SUBMITTEDs October 7P 1959 Card 3/3 83715 S/056/60/038/004/006/048 A14 4100 B019/ '0070 AUTHORS: -Al'tphuloX,_jj.,J., Kormer,, S. B., Brazhnik, M. I. Vladimirov, L. A., SperanskayW,._i.-F.,-'Fi,ntikov, TITLE: The Isoentropic Compressibility of Aluminum.4-smer I 'bead, and Iron t High Pressures PERIODICALt Zhurnal eksperimentallnoy I teoreticheskoy fiziki, inl6o,- Vol. 38, No- 4t pp. 1061-1073 TEM Now methods of investigation of the properties of materials at high pres~iures depend on the application of shock waves. Two parameters are determined% tho velocity of propagation of the shock waves, and. the particle velocity at the front, which enable the pressure and the elenlity of the ahock compression t-) be determined. Another Important kinematic parameter is the velocity of sound in the shock compressed material. This quantity characterizes the velocity of propagation of saiall disturloances in the compressed material. These small disturbances aro weak shook waves and discharge waves, and are of importance in geophysical and other similar investigations. In the present paper, a method is suggested for Card 1/3 83715 The Isoentropic Compressibility of Aluminum, S/056/60/036/004/0;)6/048 Copper, Lead, and Iron at High Pressures BO-19/BO70 the measuroment of the velocity of sound in the front of strong shook waves, and results ofJnvestigatiogs for aluminum, lead, and Iron for the pressures between 4-1 and_3. Latm. are given. In the first section a method of measuring the velocity of sound is given which depends on measurement with the discharge waves, In this method the decrease of pressure due to the.superposition of the discharge ant] dilatation wavea in the zone of the boundary of the sample in the form of a stopwise built cylinder is measured photochronographically. In the second section, elastic and plastic discharge waves are discussed. In the third part, a method of measurement is discussed in which the collision of a plate and a sample from a material of known dynamic adiabatios is studied. ThJa method leads to an experimental determination of the trajectories of tho shook waves, and to the measurement of the particle velocities at orle or more points of these trajectories. In the fourth part, the data givun in Tables 2, 3, 4, and 5 are discussed in detail. In the last two sections, the isoentropic compressibility of the metals, and the upper limit of "cold" compression are studied on the basis of the results obtained here; and an estimate of the thermal energy and the temperaturE is made. jn the present paper, the existence of two sound velocities corresponding to the Card 2/3 f 83715 The Isoentropic Compressibility of Aluminum, S/056/60/038/004/08/048 Copper, Lead, and Iron at High Pressures B019/BO70 elastic and plastic states of matter are established. The velocities of sound, and the isoentropic coutpressibilities in the above mentioned pres- sure ranee, the estimator. of thermal enorgies; the temperature of sLock compression; and the coefficionts are giver. ill tables. Yu. M. Shustov is mentioned. The paper was started in 1948 on the initiative of Aci_.demiciam Ya. '19. Zolldovich. The Corroopondint; 14ember of the AS U1,SR Ye. 1. Zababakhin is thanked for many valuable advices. K. X. Krupnikov, B. 17. Ledenov, and A.-A. Bakanova are thanked for discussions. Profe or V. A. TBukarman and his collougues I. Sh. Model' and 11. A. Kanunov helped in the conatructional problems. Some data wore obtained from V.I.Torodulin- N.S. Tenigjr, A. 14. Kolesnikova, L. N. Gorelova, and W. S. Shvetsov helpL.-d in the exporimurtal ,;ork. There are 10 fi,:;ures, 7 tables, and references: 5 Soviet and 7/ US. SUBI*.,ITTED. October 7, 1959 (initially), January 3, 1960 (after rovicion) Card 3/3 S/056/60/039/01/02/0'd!g B0060070 AUTHORSt Alltshuler, L. V., Kuleshova, L. V., Pavlovskiy, M. N. TITLE: Dynamical Compressibility, Equation of State, and.Electrical. Conduoti it f Sodium Chloride at High Pressures iLiY PERIODICAM Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1960, Vol. 39, No- 1 (7), pp. 16-24 TEXT: The authors report on the compressibility and conductivity of single crystals of rock-salt under pressures ranging from 500103 to 800-103 atm. That many dielectrics show much higher conductivity during the passage of shock waves, was discovered by A. A. Brishp M. S. Tarasov, and; V. A. Taukerman in 1950. A similar effect in dynamically loaded ionic and molecular crystals was detected in 1956. The relation- ship between the dynamical and electrical properties, and the character- istic of shcock waves has, however, not yet been investigated. To do a.) was the purpose of the present work. Thl)dynamical compressibility of single crystals of rock-salt (2.16 g/cm was measured by a method Card 1/3 Dynamical Compressibility, Equation of State, 5/05 60/039/01/02/029 and Electrical Conduotivity of Sodium Chloride B06Y2070 at High Pressures described in Ref- 5. The parameters of the measured shook adisbaties are V/C compiled in Table 1. Fig. I shows the DU-diagram of the shook adiabatics, D and U denoting the wave and mass velocities of the shook wave. The highest a li d pressure increased the crystal density 1-85 times. Fig. 2 (p shows P9 and Fig.. 3 P(6); P9 denotes the pressure of shook compres- sion, b - Vol[/v, v is the specific voluTe behind the shook wave in the initial state, and v OK is the same at OOK. In the following, the volume dependence o:r GrUneisen coefficients r(~) is investigated starting from an expression due to Slater and L. D. Landau, and also from one in Ref. 9. Two expressions (7a) and (7b) are obtained giving r as a function of n and S. n is a parameter taken from the theory of ionic crystals and lies between 7-84 and 9.1 (Refs. 10 and 11). The two r-formulas are again transformed into (9a) and (9b) which give ~ as functions of S, the lattice parameter ?, and the interatomic distance r. Analysis show* that, in the range of densities investigated, the repulsive force may '~e represented J.n the form Be-r/? with 0.318 A. In this range the Card 2/3 Card 3/3 - LLITSHLILER9 L.V.; KOMM9 S.B. Internal struoturo of the earth. no.1233-37 A 161* (Earth-Internal Isv. AN SSSR. Ser geof1s; I tHIM 34 1 struoture) 2372P ILI 1 t3' S/057/61/031/001610121101C B1161B203 AUTHORS: AlItshuleri L. V. and Petrunin, A. P. TITLE: X-ray study of the compressibility of light substances in slanting collision of shook waves PERIODICAL: Zhurnal takhnichoskoy fiziki, v. 31, no. 6, 1961, 717-725 TEXT; The present paper describes an X-ray method for studying regular slanting reflections and slanting collisions of shock waves in solids and liquids. The method serves for determining the pressures and densities in the region of stepwise "twofold" compression behind the front of reflected shock waves. The authors investigated light metals (magnesium, aluminum) and light-atom compounds diaphanous to X-rays (water, paraffin, plexilglass). They found, for all substances in the area of reflection, high densities and pressures of 600,000 - 900,000 kg/cm exceeding by a multiple tho prousures of shock waves before collision. Reflections with relatively small angles of incidence of shock waves are studied. It is shown that the parameters of the incident waves and the angle formed ' by the front of the reflected shock wave with the reflection plane must be Card 1/-Ir 23728 S/057/61/031/oo6/o12/o19 X-ray study of the compressibility ... B116/B203 known to determine the parameters in the region of twofold oomprension. For determining this angle, the authors used the pulse radiography illustrating the momentary position of shock waves within the X-rayed specimen. To illustrate the method, they first study the collision of waves of the same intensity (reflection of a wave from an absolutely rigid obstacle)(Fig. 2). In regular reflection, the space above the reflecting wall is divided into three rej;iona: 11011 is the region of rest, 11111 is the region of a single shock-comi ')rcssion between the fronts of the incident and the reflected wave, 11211 is the region of twofold shock-compression between the front of the reflected wave and the obstacle. Fig. 2 shows the position of the incident and of the reflected wave for two points of time. q are the velocities of the substance flow. The following equations are written down: D3s = D, in P _,_ Ut Cos (a sin a Cos a A U.2 = U1 (2) 82=01 Dj2 (3) D12 - YU-It Pt = P, -i- poajDj,AUj,, (4) Card 24 S/057/61/031/006/012/019 X-ray study of the compressibility ... B116/B203 D1 is the velocity of the incident shock wave, D 12 that of the reflected wave, U1 is the mass velocity behind the front of the incident wave, LIU 12 is the chan&e of mass velocity at the front of the reflected wave. is the density of the substanoe at ~2 2 / ?o *' "l - '1/"o; ?,)' ~1' 12 rest, in single, and in twofold shock-compression, respectivelyi F I is the pressure in 11111, and P1, in 112". It follows from M - (4) that the Parameters c~:ipres.,;ion are uniquely determined by the para- meters of the inci.,,Ient wave, the an6le of incidence a, and the reflection anale p. The parameteri of the incident nave are found by usual dynamio methods, while u is given by the test conditions. P is determined from the X-ray pictures tit the instant of collision of shock raves. Now, the authors study the reflection of shock waves from an elastic obstacle 3) ass,.iminlg that P2=?3(pressure of the shock wave in the obstacle), ard the flovv behind the reflected wave moves in parallel to the U, -Ain (a -i- obstacle. Dintead of (2 On I Au"=U,"Osa- (2&) cus cos t) sin a Cos Card 3/1 S/057/61/031/006/012/019 X.-ray study of the compressibility ... B116/B203 is written down for this case. The angle c_ can be determined, like from the X-ray picture. Figs. 4 and 5 show the arrangement of experiments.