SCIENTIFIC ABSTRACT KRYUKOV, P.G. - KRYUKOV, V.B.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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KRYUKOV, P.G., Jcand.med.nauk late complications in operations for the elimination of transyeroe flatfoot by the M.I.KusUk method. Ortop., travm. i protez. 21 no.8t 67-68 Ag 160. (MIR& 13: 11) 1. In Cherepavetakogo (Vologodskoy oblasti) ?orodakogo meditoinskogo ob"yedineniya (glaynyy vrach - N.A.BelyaLkova). (FOOr"ZURGEM) KRYUKOV, !~~G-I-,.Aand.med.nauk Mild form of idiopathio fragilitas ossium. Veot. rent. i rad. 30 no.6s 56-60 11-D 161, (HIRA 1512) 1. Iz Cherepovetakogo gorodakogo meditainakogo ob*yedineaiya (g3.avny7 vrach II.A.Delyakova) Vologorodskoy obDwti. (OSTEOPSAT M OSIS) KRYUKOVP P.G., kand.med.nauk Stamping (marking) roentgenograms. Med.sestru 21 no.7:50-51 Jl 162. (KIRA 15:8) 1. Iz Cherepovetakogo gorodakogo moditsinakogo ob"yedineniya Vologodakoy oblasti. (X PAYS) ELASOV, 11,G.1 ZUYEV, V.S.j KRYUKOV, P.G. Increasing the power of a ruby-type quantum pulse optical maser by resonator Q-faotor modulation* Zhur. ekep. i teor. fiz, 43 nool:353-355 J1 162. (HIRA 15:9) 1. Fizicheakiy Inctitut im, P.N. Lebedwva All SSSR. (Masers) L 10272.-h) =-31?-W.,1AM,--~11JF( 0) ACCEMIM NRs AP3002751 0/018D/63/060/003/0188/0189 AMCLR: D-Wev's Ve P... 00 74 0. 71- TITU: 0agrifte4r fo;~~~rsd4tlm.endm of an optical qu=tun oscillator 0 BOME: Fribory I tekhniks akeperlmata, w, 1 1961, 18&189 TOPIC TAM optical tors; Me"urments Of radiatim evera AWMM: Fig. I of Enclosure shows tAs schemt1c diagram of a calorlmetar-tM melver used for asasuring this =41stlon anera of In crPtIcal qpantum oscillator. copper-foil hallw sphere I vith aperture 2 is pl=ed in a vma=. The ray is directed through-the aperture lnt~o the sphere aM Is abaotbed by the walls; temperature is measured by t2ormocouple 4,- the sphere is blackened Inalde and its outer surface is coated with aL thin layer of silver. The sphere in susperAed by glass hooks I f&ich Insure therml Insulation. it is placed In glass flank 6, iftse vacuum Is maintalned. by Suter 5, 'Aw emf of the thermocouple Is measured with a galvanonster vhose aensitivity is 10 suP -7 v/mm/za and Internal resistance in approximateay 10 ohms. For a sphere of a Card ........... L 10270-63 ACCEWION M AP3002751 mis of 0*6 S* a aw*i4r of 90' mm* am overture diameter of.7'=, a fodthlcknasa e. 0.,05 =, and a thermocouple awmitIvIty 6r 5 z 10 m* -4 imile, the meavirement range van 5.x 10 amp -4 to I joule.. For a sphare of a mass of 8.7 9,1 a d1mmeter of 30 =, an aperture Alm of 3 mm, a foil thIckness of 0,5 =, I--! anti -~,hermoccruple aens=Aty Aof 34,x -10 wA-, -rj2- II the r"surtment re Vw uqalaj ~I 11 5 x 10 sUP -3 Joule- In both'emesp the tharmoiwuples consisted of copper ~;-05 m) and constantan (0.08 =) vireo, and mea=xment accuracy was 2DA. *In nf-lusion, the authom thank N. 0. Bwovp M, D. 011~, A. M, I& VIO'b" and 1~, :~.t. Maly4shey for their useM dinewalma." Orig. apt. hast I flo=e and table. ASSOCIATIONt. rizichaskly Inatitut AN SM (WIcq InstItute, AN SSM) WIMTrM: 24"169 DM AMt 1274163. MiCL:' 01 am CCME2 00 NO MW SOVI 001 01m: 02 Card ACCES*SION NR: AP4019968 S/0020/64/154/006/1303/1305 !koy P909* AUTHORS: Grasyukj A Z,; Zuyev, VeSo; Kokurino Yu.L.;-.Krlx Kurbasov, ~.V.; Lobanov IV.P. ; Mozhzherin, V.M.-; A.N.; Cherny*kho NeSe; Chuvayev, K.K& TITLE: Optical moon ranging .SOURCE: AN SSSR. Doklady*j V. 154, no. 6, 1964t 1303-1305 I TOPIC TAGS: laaerg ruby laaerl moon ranfnft moon .light reflectiont celestial ranging.opt ca ranging ABSTRACT: The paper de'scribee the preliminary results~of moon [ranging with a ruby laser* For the transmission and reception of the light pulses, a telescope was used with a mirror diameter of 2*6 M. (see Fig. I of the: Endosure)' Ta amused wai developed by V. S. Zuyev nd P.M. Kryukov and had th; following parameters: wavelength 69431, - Ipulse energy 50 to 70 joules, pulse dufttion 2*vsec. diameter of the beam 3.1 mm., and divergence 31, By taXing into consideration -the light"scattering in the atmosphere, the diameter of the spot on the moon is estimated to be 14 km. For the detection of the signall .quC.113. ACCESSION NR: AP4019968 a photomultiplier cooled with dry ice was used. The signal to noise 1 ratio was 0.16. Therefore, statistical treatment was necessary.. The authors believe that the results prove the reality of the re- Plected signal. "The authors are grateful to corresp. members A. G. Ba3ov and A. B."Severny*yl and to B. 1. Belov, F. Kh. Nigmatullin of the Lebedev Phys. Institute# and to V. B. Nikonov, Ve-Ko Prokorwv P, Pe Dobronravin, N. V. Stesheuko, and B. P. Abrashevskiy of the Cr~mean Astrophysics Obsez*atory." Origs art. hast 1 figure.. ASSOCIATION: Fizicheskiy institut im. P.No Lebedeva AkMemLi nauk i SSSR (Institute of Phyeicap AN SSSR) Kry*mskaya astrofizicheskaya I 1 observatoriya akademii nauk 8SR (CrLean -Astrophysics Observatory, :AN SSSR) ENCL: 01 SUBMITTED: O5Nov63 iTD PRE96i '30477'* SUB CODE: =I AA NO RZY SOV i -'fool OTHSRs 001 2/3 ACCZSSION NRI AP4019968 EXCLOSURZI 01 Pigs lo Diagram of unit for optical moon ranging T - Teloscopel OKC - optical 4uantized gen- aratorl L, matching lansl Z - throwovar uLrrorj D dL&phragml ZIP - interference fLI-I tort FZY slectrou.photomultLplLer; OK dry' ice container, low, 3/.3 AMBARTSMAN, R.V.; BASOV, N.G.; YELISEM, P.G.; ZUY?V, V.S.; KRYUKOV, P.G,,.;_STOYLOV, YuJu. Measurement of the time parameters of a large laser using a photodiode. Radiotekh. i elektron. 10 no.91l729-1?30 S 165. (MBA IS: 9) r, rev VIA -L 59527-65 EWA (k)/FBD/EOG (r)IEWT(l )/tEC(k)-2/E IF (n)-2/94G(m)/E PA(,v)-2/T/EEC(b)-2/ ENF'(k)1EWA(M)-2AJA(h) , Pm-4/Psi.-4/Pz-6/Po-4/Pi-4/Peb/pi-4/pl-4 SCTB/IJP(C) AG/W/A ACCEUION Of AM16~~ UP/0056/65/00/006/1563/lieT ri, AUTHOR R. V41 so #i VAUD. Amabartsumq J- V An. -LASJ ttavy, 10 611 $610y, No, ZAO 0. 1. 1 SEMka, P. 0. t Genstaklyj Tit Y. I Otc7lovii Y140 Tn. i i-T-ITLIt Keating of matter by :focused laver radiation SOUMIt Zhurul eksperivientallom I teorstleheakcy fisiki, Y. 48p no. 6, 1965, TOPIC TAM high tMsratmuaw~p laser a2dicatio xamer radiatioup 11thUmej, I air ABSTRACTs In discussing the main factors that limit the beating of matter to high 1 temperatures by laser radiation, the authors point out that to solids the UnIte- tions are Inposed by the sharp focus that obtains under most experimental condi- tionsp and that In games the limitation Is 4vosed by the poesibillty of gas break- dom. in view of theme limitation, they ewoludsp after snLl7zing the motion of the breakdown toondary In a gas qualitativelyp that focusing of laser radiation w the surface of a condensed- vWum located In vsou= to the wet promising wthod at i *t�424go kJ& f4q%"r&tVM pUMIS IS JUS 4"S tM UNA C=Vod=t Note of L 59527-65 ACCESOZON NRi AJPP16549 operation to one In which one-dimensional motion of plasmim. occurs, mince thres- dimensional motion leads to rapid reduction In density and a decrease to the re- lative fraction of the laser radiation absorbed in the plama. Under these tonal- tions the uaxlxm achievable temperature to determined by the anorgy lose due to radiation and thermal conductivity. The authors then report the results of a optatral analysis of the emission from a plasm produced b7 focusing %he radiation from a noodymium glass q-twitched laser an the surfaao of a solid sample of lithium In vacuum. Ili* laser radiation consisted of tvg pulses, each with energy approx- imately 3J w4 oseh approximately 40 save In length. The motivated obtained tow peraturs in this case Is of the order of 20 my (2.3 x 105 dog). In the case of breakdevn produced In air of normal density by a ruby laser pulse of approximately 31 the earresponding temperature eannot exceed 10.3 *To Orig. &A- beat 3 figures and 3 formulas. (021 j. ?Isichoskil Institst ixo~ ?a No Wbedm Akiduli sauk MR (rastes _17vWI~U;, Led of $classes, $881t) louna=s x6jazO WLI M SUD CM1, CC# $41 Ito nr say 1 009 MMI 003 M PIMI .40" v-,~1-13/IJP(c SOUIR'ci(F NE': UA/ 16'~A 1 01, Wo (T6 WIMOR: Basov ~ (~o r io' L. rA;; 53SR) ; km~~a~pumiZ;~n,.V Zuy!q, V. 5 I N. opondiL6 momb V. Kryukov P. G,-, 1,6tokhov, V. S. ORG: physics Institute im. P. (Fizicheakiy 70 institu~*,_'Akadeaiya nauk SSSH) TITLE: Velocity of propagation of a powerful light pulse in a medium vith population inversion SOURCE: JVI SSSR. Doklady, Y. 165, no. 1, 1965, 58-6o je, 19 TOPIC TAGS: laser, rly laser, laser pumping, optic'pumping ABSTRACT: The article is a brief advance report of a comprehensive work to be pub- lished separately. It was shown that the leading edge of such a pulse does not change naterially while propagating within a medium with inverse population. In the case of a. ruby medium with usual parameters the velocity of the pulse maximum on reaching its stationary value van shown to be Ii x 1010 cm/sec, which greatly exceeds the velocity of light. This fact, however, does not contradict the causality principle, since such a propagation taken place as the result of the deformation of the initiall) weak leading edge, and can continue only to the point of zero intensity vhich always propagates with the velocity of light in the medium. An amplifier composed of two ruby yods 24 cm long wan used for experimental study of the problem. The end faces L 4065~6_ ACC NRs AP5027834 of the rods were cut at the Brewster angle. The total gain for a weak signal was about 50. Both Input and output pulses were recorded by the same coaxial photocell arrangements, but the output pulse was made to travel an additional distance so that it reached the photocell 56 X 10-9 sec after the input pulse. The parameters of the input pulse were as follows: energy 1.3 J. pulse width 16 x 10-9 *sec. A comparison of oscillograms of weak and strong pulses revealed that no appreciable shortening of the pulse occurred, and that only the time interval betueen the input and output pulse shortened us the pulse strength Increased. The shift in the time interval in this case was 9 x. 10-9 sec, which agrees with the theoretical considerations pre- sented above. It follows that amplification ef the exponentially growing leading edge of the pulse results not in a shorter pulse, but in an additional shift of the pulse peak. To shorten the pulse, it is necessary to increase the steepness of the leading edge by, say, cutting it off by a shutter, by nonlinear absorption, etc, It is noted further that the shift of the pulse peak with velocity exceeding the veloc- ity of light is accompanied by the shi:rt of the boundary of Inverse population and can lead to the emergence of a number of new effects such 83 that of Cherenkov radia- tion. Orig. art. has., I figure and 2 formulas. [ ,-T I I SUB CODE: EC, OP/ SUBM DATE:- 3ljul65/ ORIG REF: 002/ OTH REF: 002/ ATD PRESS: L 1379-t,61 -2/~EWAW 3CTB/lJP(c), ACCESSION NR; AP5022443 WO UR/0109/65/010/009/1729/1730 621-318-325-001-5:621.383-52 AUTHOR: Ambartaumy&n, R. V.; B&NOV N. 9 Y Kr ZHXev. .,Yukov, P, G.; Sto _ylov, YU, qq TITIX- The measurement Ofthe time parameters of & giant pulse laser by nesna of a photodiode SOURCE: Radiotekhnika I alektronika, v. 10, nd. 9, 1965, 1729-1730 TOPIC TAGS: giant pulse laser, gallium &rsenide,,photodiode, resolving time, Kerr cell, photomultiplier ABSTRACT: The time-dependent characteristics of a giant pulse lasqr switched by a Kerr cell were measured by, means of a gallium arsenide photodiode. The photodi- ode was obtained by diffuolon'of cadmium into n-type GaAs with a 2 x 101a cM73 con- centration of tellurium during a period of 60 hr. The depth, thickness, and area I of the p-n junction were 80 u, 0.9 p, and 2.5 x 10-3 CM2, respectively. The photoj' diode was pumped at right angles by & nonfocused lr-aer beam and the pulse width I frcm the photodiode (connected across a T5-ohm load) was 40 nanosec at room temperL--- ture, and 20 nanosec at 77K. The results Indicate that the resolving time of the L 1379-66 ACCESSION NH: Ap5o22443 photodiode is not greater than 5nanosec, a quality which-awkes it competitive with photomultipliers. Mike photomultipliersi which introduce a signal time log, photodiodes are capable of accurately determining the time lag of a laser pulse released by the Kerr cell. The experimental value of the lag was 80 nanooec. Orig'. art. has: 2 figures. (YK1 I ABSOCIATIONt none SUBKITTED: 09Dec64 EXCL: 00 SUB CODE: EC NO REF SOV: 001 OTMM: 001 ATD PRESS: i Card -2/2_ .L 4'-'a4-0-f,6 EEC (k)-2/i7wA(h)/W(k)/LWT(1)/rBD/T IJPW ACC NT AP6004913 SOURCE CODE: UR/0056/661050/001/0023/0034- "I'l 1011: Basov, N. G, Ambartaumyaq R. ZpySyLy !ayu G. Le okhov V !i p. ORG: Physics Institute Im. P, N. Lebedev, Academy of Sciences SSSR (Fizic skiy institut Akademli nauk SSSR) TITLE: Nonlinear amplificatioh of a li ht pulse SOURCE: Zhurnal eksperimentallnoy I teoreticheskoy Mild, v. 50, no. 1, 1966, 23-34 TOPIC TAGS: laser, nonlinear optics, stimulated einission, quantum amplifier ABSTRACT: A theoretical and experimental analysis is made of the passage of a powerful light pulse from a laser through a laser amplifier consisting of two ruby rods operating in a saturation regime. The preliminary experimental results have already been reported (Akademiya nauk SSSR. Doklady, v, 165, no. 1, 1965, P. 58-60 (see ATD Press, v. 4, no. 138, p. 7-8)). In the experiments performed, 1 it was shown that as the result of nonlinear amplification the velocity of the pulse is 6-9 times greater than the velocity of light In vacuum. To decrease the pulse duration during nonlinear amplification, the olope of the incident pulse should be Card 1/2 L 2184o.66 ACC NR, AP6004913 increased by chopping off the exponential leading edge of the pulse. By using a second Kerr cell, the duration of the pulse was shortened from 8.7 * 0.5 nsec to 4.7 -k 0.5 ndec and the time from 3.7 -t 0.5 nsec to 1.9 * 0.5 nsec. The theo- retical analysis of nonlinear amplification predicts both of the observed effects Orig. art. has: 19 formulas and 8 figures. ICS) SUB CODE: 20/ SUBM DATE: 31Jul651 ORIG REF: 011/ OTH REF: 008 Card 2/2 not L ~17)1i.;_66 1 1 113 1 r I_T ACC NR. AN=67 COE t uR/o3%/66/oo3/oo6/026l/M& 54 SOURCE AUTHOR: Amb suwan. JR. YJ fts- L_N,._Qt0*,,KrYukoY. P. G.; P~okhoy S. ORG: Physics Institute im. P,-N. Debedev, of Sciences SSSR (Fiziche Lo uk Y skiy_ atitut Akademii na SSSR TITIZ: JAser vi h ,21~!jonrescnant feedback SOURCE: Zhurml"e%perlmentaltwyiteoretlcheskoyfizikl. PielmayrodaMsiyu. Prilozhenlysp Vo 3P no* 6, X9a,, 261-264 TOPIC TAGS,* laser r and ds ruby laserp laser beamp light scatteringp laser QVtIcs ABSTRACT: The authors report achievement of laser action with nonresonant feedbackp produced by back-scattering from a volume or a surface# which behaves like a "sto- chastic" resonator with a continuous natural-frequency spectrum. The luing frequen does not depend on the--length of the resonator,, but Is determined by the resonant fr quency of the active medium. In this laser (Fig. 1) the active medium comprised two Fig. 1. Diagram of experiment, I - Beat- tererp 2,,3 - ruby crrstalp 4 - Mirrori, 5 filter,, 6 phortocellp 7 osciUoscoPeo 4 a I k ACC NR: AP6008754 ruby crystals in seriest each 24 cm long and 1.8 cm. in diameter. The feedback was produced with the aid of a mirror (reflection 99%) and a volume scatterer (suspension of chalk particles In water) or mwface scatterer (plate with a Wer of sputtered MgO). The light was recorded with a photocell and oscilloscope, and its spectrum -was measured with a Fabry-Perat interferometer. 7be gain of a weak signal In one passage through the tro crystals reached 900. The condition of self "citation of the laser Is described. The lasing -threshold is found to be practically independent of the angle of inclination of the scattererp over a wide range, but increases with increaain distance between the acatterer and Us crystalt The radiation line width was smaller than 0.015 crr3- and was determinedby the resolution of the interferometer (the spon- -taneous emission line width of ruby Is 15 cm7l). An investigation of the beat'radi&.~-, tion.Aspectrum has shown that there are no frequencies characteristic of lagers with '-' resonant feedback. The angle spread of the beam was proportional to the ratio of the crystal diameter to the average distance between the mirror and the scatterer. The distribution of the radiation field in the far zone was quite homogeneous. A pulse with duration 200-nsec was obtained in the case of Q-switching of the stochastic res- onator. The average frequency of the generated radiation in the laser with nonreso- nant feedback was detexmined by the position of the center of the atomic transtRon" and not by the resonance of the feedback. It is consequently possible to produce an optical frequency standard on the basis of a laser with nonreeonant feedbac~jp using high-gain atomic transitions in a gas discharge (Nep Xe, etc.) operating. in the con- -tinuous model and also acatterers with narrow back-scattering directivity pattern. C tilt' AP6008754 It is noted thet generation with feedback due to scattering by inhomngeneities of tho cryatal and by the matte side surface of the crystal can limit the maxima gain. Orig. art* hast 2 f1gures, [021 SUB CODIt 2o/ sm Dais ogr"6/ OM RU: OW OTH PXF3 003/ ATD PRZSS: Card L 44793-66 1JP(C) W011WH ACC NR. AP6031433 SOURCE CODE: UR/0056/66/051/002/0406/0411 AUT11OR: Ambartsumyan. R. V.; Basov, N. G.: Zuyev,_V. S.; Kryukov, P. G.; S_ Letokhov. V. .; 41!ptberas viii, 0. B. ORG: Physics Ingtitute Im. P. N.-Lebodev. Academy of Sciences SSSR (Fizicheskiy institut Akademii nauk SSSR) TITLE: The structure of a giant pulse of a Q-switched laser SOURCE: Zh eksper I teor fiz, v. 51, no. 2, 1966, 406-411 TOPIC TAGS: solid state laser, ruby laser, giant pulse laser, Q switched laser, laser output ABSTRACT: The spatial and temporal development of a giant pulse of a Q-switched rubyl' laser in a transverse direction and the effects of the cavity on it were Investigated experimentally by means of the setup shown in Fig. 1. A ruby rod 9 mm In diameter and 120 mm long with dull lateral surfaces was placed in a reflector with a helical IFK-15000 flashlamp. For an 8-kj pump the gain per pass was approximately 12. A 1.5-j single laser pulse was generated with a duration of 10-15 nanosec. Q-switchigg was done by means of a Kerr cell or a vanadium phthalocyanin solution. The exponen- tial results indicate that generation commences in the center of the crystal and spreads transversely over the entire crystal in 3-10 nanosec, i.e., in a tir%e com- parable to the duration of the integral pulse. The spat-.al development of generation Card 1/2 ACC NR, AP6031433 ~41 r Fig. 1. The experimental setup 1 - Mirror 99% reflective; 2 - polar- izer; 3 - Kerr cell; 4 - ruby cryst+ 5 - lens; 6 - semitransparent plate;,-~ 7 - screen with diaphragms; 8 - int4r- ference filter; 9 - dull glass; %A'. 10-12 - coaxial photocells; 13 - multibeam oscillograph. depends essentially on the density distribution of population inversion in the crystal and on its refractive index. The experimental data agree fully with theore- tical data presented elsewhere (V. S. Letokhov and A. F. Suchkov, ZhETP, 50, 1966, 1148). The authors propose further experiments on the measurement of nonuniformity of the complex permittivity at the Instant of Q-switching and generalization of the theory "or the case of a nonuniform refractive index. Orig. art. has: 7 figures'. IYK)i SUB CODE: 20/ SUBM DATE: 06Har66/ ORIC REP: 007/ OTH REF: 006/ ATD PRESS: 5080 2/2 b1g SOURCE: Zhurnal eksperimentallnoy i teoreticheakoy fizikis v. 51, no. 3, 1966, 724-729 1 and di TOPIC TAGS: solid state laser, ruby laser, nonresonant feedback,,=---=.=-iL- laser r ABS7RACT: A description is given of a pulsed laser with a no.,resonant feedback achieved by back scattering of radiation (See also FSB, v. 2, no. 5, 1966, 1-6). The arrangement used In the experiments Is shown In F1g. 1. The active medium 2 4 6 7 Fig. 1. Experime-ntal arrangement ord 112 a r i A APL)U321W ACC NP SOURCE CODE. 56/"6/051/00-3/0724/07 2y- AMMOR; AmbartswVfin, H. Vo; Basov, N. 0.1 Kryukov, P. G.; Letokhov, V. 3. ORG: Physics InrL'A*tute im. P. N. Lebedevi AcadcuV--of SelenceafSSSR (Fizicheskiy instit-W-ARa-emli. nauk 605P) s e r TITLE: Laser th a nonresonwit feedback L ACC NRt AP6032h(;'( conalats or two 'Mt)~~roda, 2 and 3, each 24 cm long and 1.8 cm In difureter with the ends cut at the Brewster angle. 7be reedback in achieved by mervis of -mirror 4 (70% reflective) and a volume or surface ocAtterer 1. The volume scatterer consists of sulfur hydrosol particles with diameters not less than the laser wavelength which are placed in a 15-cm-long cell with Brewater angle windows. The surface scatterer is a layer of magnesium oxide sputtered onto an nluminum plate. The rest of the experimental setup consists of a filter 5, a photocell 6, and an oscillograph or Fabry-Perot interferometer 7. Experiments indicate that varying the inclination angle of the actitterer between 0 and 600 has virtually no effect on the oscillation threshold, which was observed to Increase with distance between the scatterer and thq crystal. The sl,itial coherence length of the nonresonant feedback laser does not exceed 0.25 mm. The laser emission is highly monochromatic and the frequency of radiation is independent of the cavity dimensions. 7he line narrowing (to 0.005 cm-11 above the threshold for laser action depends on the resonant properties of the activ medium. This pr\iperty makes such a laser a reliable optical frequency standard. For this purpose it is preferable to use mixtures of gases ouch as Xe, Me-He, etc., as active media +,o provide a high gain per pass and a cw operation. Orig. art. has; 1 figure w.il 4 formulas. [YKI SUB CODE: 201 StmM DAM 21mar66/ ORIG REF; 003/ 07H REF: 005/ ATD PRESS: 5093 ea 'rd 2/2 lir , I - ;' i - -uc- - u f -L.1) --- TJF((, C'NRF--,-A,P6o 35 SOMICE COM VP/0386/66/004/001/0019/0022 AUTHOR* Ambartawqun) R. V1; BaBoy) 0. 04; Z!MM-V. S. !~x ev P. G.., AjekhovL.:2~ n!t_j L V. S. ORIG: .119sics Institute 1FA, no Lybedey, Acq4cmy p-f-AqjSq~en Ma_L.Fizichealdy in- atitut Akademii nauk SSSR) TITLE: PrqMatlon of a 11 pulse in a-nonlinearly. arpiltying and absorbing medium SOURCE: Zhurnal. eksperimentallnoy i teoraticheakay fiziki. Pialma v redaktaiyu. Prilozheniye, v. 4, no. 1# 1966, 19-22 TOPIC TAGS: coherent Light, light pulse, laser beam, laser r and d, pulse ahal)e, ruby optic material ABSTMCT: This is a continuation of earlier work by the autbors (ZhETF v. 50, 23,P 1966), where propagation of coherent light in a medium with nonlinear gain was in-vesti- gated and the possible shortening of light pilvea in such a medium predicted. 'The present letter reports on successful experiments in this direction, showl%r that to obtain coripresnion of a propagating light 1ALIze it in necessai-j to elildnate the trans- verse structure that is produced in the light pulse when the latter is produced) for example, by a q-awitchq laser. In the test setup (Fig. 1) the amplifying component consisted of three rvbyj;-~crystals and the a~sorblng component was two cuvet-tes filled with a solution of vanftdlum Phthal e n tolurne. In the initial experiments the pulse compression cc-ula-in-o-f-R-r-eilIze bee use of the transverse structure resulting Card ACC NRl AP6023635 Fig. 1. Diagram of experi-I' ment. 1 - TAcer, 2 - Kerr shutter, 3 - cuvettej, 4 ruby crystal from the fact that the dcrrelopment of pulse generation in the peripheral P&AG of the crystal is delayed by a timo'Qf the order of the pulse duration. Success was attained when tM3 structure was eliminated by means of a second Kerr shutter that cut a" the leading front of the generator pulse. The pulse width was redu,:ed from about U nsec (at o.5 T energy) past the Kerr shutter and the first absorbing cuVette to 5.7 nsec (R) J) past the second amplifying crystal) and 2 nsee (15 J) patt the third. A light oultPut of 7 - 8 GW 0 GW/cp?) van attained. The pulse power is much higher than the power causing dama4ge in ruby cryot&la at 10-0 sec duration (1 GW/cM2). Although dar,age to thq crystal is hindered by the short duration of the pulse, it does not pre- vent generation of powerful light pulses shorter than 10-9 see. It is concluded that e-,tr(.-nc3j short light pulses are obtainable with two-component media In which the ab- norbing component has a saturation energy much lover and a homogeneous line width much larger than the amplifying =di". Orig, art. hast 2 floves. [02) BUD CODE- 30/ MM DM: 03YAYa/ ORIG MW 0031 OTH PXF: 001/ ATD PRMS L & 2/g ACC NR: AP7003209 SOURCE COON; UR/0056 66/05 1/006 /1 w_/1~7-5__ AUTHOR: Arbartsunyftn, B.V.;j~,ryukov,.P.G.; Letokbov, V.S. ORG: Phyaics Inatitute im. Poll. Lebedevt Academy of Sciences 535E (Fizicheskiy inatitut Akademii nauk SSSH) TITLE: Dynamics of spectral line narrowing in a nonresonant feedback laser SOURCE: Zh eksper i teor fiz, v. 51, no. 6, 1966, 1669-1675 TOPIC TAG9: solid state laser. ruby laser, fee laser lml"~ ABSTRACT4-The authors proceed from rate equations for the spectral density of th .photons and for the density of the active particles. The time-depende:t line width Av, is expressed in terms of exact solutions through numericall integration, and also in terms of a simplified formula which shows that Av; after an initial transient-state period, growe roughly as k/vf-h (k--threshold gain per pass), toes) much more slowly than in lasers wit resonant feedback. The experimental part of the paper deals with the 1/2 none ACC NRs AP7003209 ,spectral analysis of the emission'-Of a nonreionant feedback ruby laser by the method of the Fabry-Perot interferometer and the rotating-mirror spectrograph. The parameters of this laser were described earlier '(Ambartsumyan, R. V., N. G. Basov, P. G. Kryukov, V. S. Letokhov. ZhETF, .PvR, 3, 1966, 262; ZhETF, v. 51, no. 2, 1966, 724). The observed values of the spectral width are shown to confirm the theory. White paper and magnesium oxide were used as surface scatterers, and smoke and sulfur ,hydroaols were used as volume scatterers. With smoke the threshold gain :pass k was naturally very high, and narrowing (to 0.03 cm-1) occurred quite rapidly (in 100-300 psec). SUB,CODE: 20/ SUBM DATE: l9jul66/ ORIG REP: 005/ OTH REP: 005 ATD PRESS: 5113 2/2 T1. 1. 1 "r- 6A / I I - '_ I _i__1 -- - 1~ - r I - ~'' -Ay~j _FiFt ACC NRj AP6011277 SOURCE coDE.' UR/04-13/66/000/006/0137/0137 INVENTOR: Kryukov, P. 1. ; Chugunkov, V. 1. ORG: none TITLE: Method of grinding and polishi_qg of curvilinear sections. Class 67, No. 180108 SOURCE: Izobreteniya, promyshlennyyeobraztsy, tovarnyyeznaki, no. 6, 1966, 137 TOPIC TAGS: grinding, metal polishing, jet vane ABSTRACT: This Author Certificate introduces a method for grinding and polishing! jet vane sections using a grinding belt and the short -hue contact method.-To eliminate profile unevenness caused by moving of bases, residual and elastic deformations occuring during the treatment process, the part being worked on is given an additional degree of freedom. It rests on a supporting roll with a premachined surface. LD) SUB CODE: 13/ SUBM DATE: 0lJul631 wd 1 / 1 0 (1- Ot/ mc: 621.923.1:621.924.24 SCHTJLZo X.I., prof essoro doktor; TUXOT I inshoner [trans2ator]; -JUL v rl XIUXXO, 8.79, rodaktor; AgIX;.uaV"I'.LZrlr.",&':rodaktor; TAROT, I.X., takhnichookly rodaktor [Xllk that keeps weU. fteas2stod from the Oormau] Stolkoe moloko. Forevod 9 noustakogo F.I.KrIulcival, ftd red. B.FoXivoukoe Xoskvag Mehobspromisdati, 1956o 106 p, (NLPA 10:1) (Xilk) AZBELI., S.M.1 ZAIKIN, N.I.j_APgOVj_Pj.j SAVINt I.M.; NOVIXOV9 V.F., insh., reteenzent; KHARLAMOV, P.G., insh., red.; VORDTNIKOVA, LA,-takkn. red. (Repair of failures of the CbME2 diesel locomotive] Ustrananis asispraynostai toplovosa ChH92, Moskyap Tranesholdorisdat, 1963. 53 p. (MIRA 160) (Diesel locomotives--Maintenance and repair) _'XRTUKOV, Petr Sergeyevich; VADEM, 0., redo; DANILINA. A., tokhn.red. (This must not happens against Imperialist plans for an ato2io wail Xto no dolshno proisoiti; ptotiv imperialistichoskikh planov podgotovki atomnoi voiny. Moskva, Gos.izd-va polit lit- 1959. 46 y. (Mlil 12:51 (Atomic weapons--International control) ,I _r- - KRYUKOV, R :j_J n2h. N Ipartment bouse built of prefabricated Ifosk. I no,9:11-14 5 138* (14oscow--Apartment houses) (Precast room-blocks. Na stroi. (MRA 11:12) concrete construction) -IRIgKOVI_~. ~., Cand Tech Sci -- (diss) "Basic problems in the tech- nology of manufacturing in an upright position thin-walled safety frameworks for apartment houses." Moscow, 1960. 18 pp; (Moscow Higher and Secondary Specialist Education RSFSR, Moscow Order of Labor Red Banner Construction Engineering Inst im V. V. Kuybyshev); 160 copies; price not given; (KL, 29-60, 125) SARAPIN, Iosif Godelevich, kand. tekhn. nauk; Kg;grKgv- " , kAnd. tekhn. nauk, nauchnyy red.; YEMOI(AMUL, M.D., red.lzd- va; GOLIBERG, T.M., tekhn, red. (Manufacturing keramsit-conerete wall panels for completely prefabricated apartment houses] Proizwodotvo keramsitobeton- nykh atenovykh panelei d1la polnosbomogo domostroeniia. Moskva, Goostroiizdat, 1963. 134 p. (MIRA 16:8) (Walla) M.N.., kand. tekhn. nauk; YRT;K011, R.V... kard. tokhn. nauk; PEYSIKGVP V.A., inzh, Mobile shield method for molding large panelB. Stroi. i dor. mash. 9 no.1:24-28 Ja 164. (MIRA 18:7) "I KRYUxOV, B. 1. Cand Tech Sci -- (dies) "Selective dimerization of propylenes and syntheses based %ipon It." Yaroslavl', 107. 12 pp incl cover (Ma of Higher 3duo&tIon USSR. Yaroslavl# Toohnolocia4l Inst), 125 ooplas (Mu. S,53. 0?) -24- vil Os Oil A~THORS# Farberoy, M. I., Machtina, K. A., Xryukov, S.I., 20-1U-4-35/63 TITLEt Two bethods for a Commercial Scale 1'roduotion of Ilethyl- pentadiene (DVS metods tekhnicheekogo sinteza matilpentadi- yona) PIRIODICALo Doklady Akademii Nauk SSSR, 19571 Vol- 114, Nr 4,PP- 807-81o (USSR) ABSTRACTs Hitherto mothylpentadione is a commercially little aoasssible diene. The only method of some technical value was proposed by American authors and produces nethylpentadiene from acetone.Be- cause of the properties of its polymers and oo-polymers methyl- pentadieno is of a certain interest. The present paper describes two methods of its technical synthesis. 1.) The authors thorough- ly inyeatigated the interaction reactions of olefines with al- dehydes, Thus the chief reaction product from the interaction of isobutylene and acetaldehyde in the presence of 1-2%p sulphur- io acid in 294P4,6-tetramethy1dioxans-i93 (denoted TXD/I/ in the followingo 9o% yield of the aldehyde reacted through). Publish- ed works report that the alkyldioxanes-1,3 may be serve as ini- tial substances for the dion6synthesis. The authors' experi- Card 1/3 ments proved that by the passage of TO with vapor over a o&. Two Vethods for a Coamercial Scale Production of Uthyl- Z." ptntadieno "alyst, ustapenta.419ne witb & 75% nol. yield ,f 04 TXD/I/ in obtained. On this occasion two isonio-y-ic dienes d:vsloys 2-m*tbYlV#ntadI*nQ-193/II/ and 4-methyly*ntadiens- I 3/Ill/, Their pbjsiaal p"pertiot art very siallar. Their quantitative determination in the mixture is based upon their different behaviour towards maleic anhydridei 11 given an ad- duct, III a co-polymer. In the presence of Inhibitors the po- lymerization inclination of III may be suppressed, so that it can be separated from 11411 and III were obtained in the pro- portion 45155, Beside methylpentadiens a small amount ( ) of a mixture of two isomeric methylens pentanoles (IT &am T re- sults from contaot cracking. There oocurs also a cracking r4- action of 1. giving the original substancess &oetald*Wo and isobutylens. A diWaa of contact cracking of TXD/l/ in dJme in given in the paper, The water apparently participates in the re- action and favours the hydrolysis.of I into an Interm*diat* di- ol on the surface of the catalyst. In the moment4of its forms. - tLon tr dehydration under liberation of one or two water mole cules and under according formation of a aixture of two isom;ric methylpontanolon IV,V or diense 11,111. 2) The second technical Card 2/3 method of methylpentadions synthesis is the dehydration of the Two Nothodsfbr a Commercial Scale Production of Xethyl- 2o4lk-4-35/63 pentadione propylen*-dimero 2-methylpenteno-1/VII/. The expe-iments with catalytic dehydration of VII show that zeth.Tlpontadiene can be produced in this manner, Here# too a mixture of the isomers II and III is obtained in about the same amounts and with a yield of 35o38% of the VII sent through and 70-75% of the VII decomposed. There are 2 figures, 2 tables, and 11 references, 4 of which are Soviet.. ASSOCIATIO11i YAM1ATI'Toohnologioal Institute (Yaroolavokiy tokhnologiohookly inatitut) PRESERTIDo January 15, 1957 by I. N. fiazarov, Member, Academy of Sciencest USSR SUBXITTZDj November 14v 1956 Card 3/3 AUTHORBs XgZ_qkgX,. S. I., Kut' in, A. M., Levskaya, G. S., 153 -58-1-13/29 Tepenitayna, Te. P., Ustavahchikova, Z. F., Farb,~rov, M~ I. TITLE: An Improved Method of the Synthesis of Triethyl-Aluminum (Uluchahennyy sposob sinteza. trietilalyuminiya) PERIODICAL: Izvestiya vysshikh uohebnykh zavedeniy, Xhimiya i khimichookaya takhnologiya, 1958, Nr 1, pp. e6-93 (ussn) kBSTRACTs The authors give a survey on the publications of trialkyl- aluminum as specific catalysto both alone, as well as with cooatalysts for olefinio polymerization (references I to 3), and they compare with each other the known methods of production of aluminum-grganio compounds (references 4 to 6). The authors selected the method by Grosse and Meviti (MavitYt ref- 5) as the moot convenient one. A)- Production of ethylaluminum seaquiohloride (mixture of ethylaluminum- -diohloride and diethyl-aluml-num-cbloride). The first stage of the process according to reference 5 proved to be rather incomplete. It is difficult to be controlled, has a long period of induction and often lead@ to the complete Card 1A destruction of the products, sometimes with explosion. The An Improved Method of the Synthesis of Triethyl-Aluninum 153 -58-1-13/29 authors tried various initiators at atmospheric pressure (crystalline iodine, othylaluminum-gesquichloride, ethyl- bromide and a mixture of these substances). Table 1 shows the influence of individual initiators on the period of reaction. Ethylbromide acted most efficiently. Table 2 shows the influence of the initial temperature with the supply of ethylohloride on the reaction-period. Optimum conditions for the carrying out of the process were selected from the obtained test results. Further tests were carried out on an enlarged plant (figure 1). The laboratory.results were confl rmeds It was possible to reduce the reaction- -period to from 2 to 3 hours. B)- Reaction of symmetrization of ethylaluminum-sesquichloride. In order to obtain tri- ethylaluminump the above reaction must be carried out with the participation of metallin sodium. According to reference 51 various insufficiencies exercised a disturbing effect in this connection. The authors found the conditions for removing themo I)- Sodium ought to be used in fine dispersion, the surplus of Na must not exceed 5 to 10% of the theoretically required quantity. 2) - sesquichloride must.be introduced in portions as a 20 to 30% solution in Card 2/4 hvdrocarbons. 3) - The temperature of reaction must not An Improved Method of the Synthesis of Triethyl-Aluminum t,153-58-1--13/29 exceed 1300 and an intense agitation should be guaranteed. The gasolinetraotion "galosha" (boiling above 1000) proved most effective among soveral tested solvents. The yield of triethylaluminum, amounted to 70 to 76% of the charged sesquichloride under the selected optimal conditions. A certain quantity of partly oxidized triethylaluminum was proved in the produced triethylaluminum. The inactive part of the catalyst formed a mixture of all 3 possible ethoxy- -compounds. An experimental part follows. C) - Production of aluminum se9quichlorides According to the method described here, a 99% yield of that theoretically possible was obtained. The two (paragraph A) components were present in the mixture in approximately squimolar quantities. D) - The reaction of symmetrizatioA was carried out in a device shown in figure 3- A filter required for this purpose is shown in figure 4- There are 4 figures, 2 tables, and 12 references, 3 of which are Soviet, ASSOCIATIONt Yaroslavskly tekhnologiohoskiy institut I opytnyy zavod Card 3/4 Ministerstva khimicheskoy promyshlonnosti. Kafedra An improved Method of the Synthesis of Triethyl-Aluminum 153-56-1-13/29 tekhriologii ounovnogo orgadahuakogo Gintoza i Ljr (Yaroulavil . - - - -''. ~ .,I I - I., Technological litatitute and the Experimental Plant of the Ministry for Chemical Industry. Chair for the Technology of General Organic Syntheeia and SK) SUBMITTEDi September 23, 1957 Card 4/4 S/O81/60/0oo/oo-(/oo5/o12 A0061AOOI Translation fromit Referativnyy zhurnal, Kh1miya, 1960, No. 7, p. 189, # 26523 AUTHORS: Kr"jukov. S. I., Farberov, M. I. TITLE., Methylpentadienlynthesis on Propylene Base PERIODICAL: Uch. zap. Yaroslavsk. tAekhnol, in-ta, 1959, No. 3, Pp. 21-33 TEXTt 2-methylpentene-I (1) -is easily obtained by d1meriznion of propylene according to Talgler; It is dehydrated into methylpentadiene (11) In the presence of a K-16 catalyzer (preparad on the base of metal -oxides and 0 additionally heated for 1.5 hours at 830 C). Under optimum conditions (500, C volumetric rate 0.6 1 per 1 1 of the catalyzer per I hour; molar dilution by vapor I : 12) the following substances and the yield peroentage pt%r decomposed I, were obtained; 11, 71.8; Isoprens, 3.4; Isobutylene, 6.4; propylene, 2.3; higher hydrocarbons, 2.6. Changes In the temperature conditions of the reaction reduced sharply the yield of 11. Kl~ and K18 eatalyzers yielded less satlsfac- tory results; changes in the volume ric ra e had only a slight ef"fect on the Card 1/2 Methylpentadione Syntheato on Propylene BAso s-r/081/60/000/007/005/012 A006/001 yield of II; a greater effect was exerted by changes in the amount of diluent vapor. Thermodynamical calculations of the reaction are given. L. Shchukina Translator's note: This is the full translation of th,!, originad Ruseian abstract. Card 2/2 -S/081/160,fto/o 17/013/10 16 A006/AO01 fr-.T,, Referativnyy zhurnal, Ehimiya, 1960, No. 17, P, 372, 170452 Yrvuh,;V- S.I..,Kut 1y1n *L A.M., Loevskaya, O.S., Tepenitsyna, Ye.P,, Uslavehchi a, Z.F.., Farberov, M.I. ?SyntheS45 .iz 7e.,hnical Mcde of Trlathylalumint= FE~:OICAL- U:h. zap,, larosllavak.,tekhnol. In-ta 1959, Vol. 3, PP. 5-17 TEXT." rhe devels;ed a technical mode of prepmring ethylaluminum- 10 wi-h a yield :f about 100% cn the tas1s cf a method dezeribed A.U,, Majity, J.M., Organ. Ch,~-n,, 1940, N,-. .5, p. 196) 'which consists in !---era:*.1:n .:,f C2H Cl (1:) and Al ir. the presence of 5-10% C2H Br (III) 1 5 "?ators yield- wl-*h r~.O'a!.!:n -: Al. 12, (1) and their mixtures were tested as Init, i.na ~neatisfa:t~ry resjl*,z. ~-t is assumed that the prc-ess 1B initiated by inter- X~Aia-~:y f-rm!ng el~tylaiurrinirnsesq,,iltr~,mide, in 'he case that III Is 1;sed. I is ~.ran;f-r:ro~l n- 12F5 )3A! (ZV) by pr,,ce3sIng with dlsper~ed Na metal in organic ~7~,'*~-:~- (tznzin-r~-ittsr, reflne,l kerosene, xylene, iv-cctane). Na is taken in lln-,- the rea~,~!;,n by p~,rtlcnz In the fcrn cf 3/108 1/160/tw/t 17AIL3140 16 Y:J~ *f :'rvi-ty!.a;.imin,.im Synthezis A006/AO01 the yield of V1 is 70-76% in relation to I, and Al. All *.he experiments are carried cut in dry N2 s ;nere fr4? -!A of Arr-:,.ints of 40 g Al and 24 g 1:1 are heated, while stir- jC g (11C%' I' Is al-isd by portions of 10 ml., the react, 5C'C vi 16 cn a_t 8 1 iG5 -~:._Ialned in t-he form of a colorleEs or slightly colored trr- yt,7.3 i-i 99%, bciling temp*rature 117-122'0C/,50 mm, - in ICO g of '~he ~?q g Va 1. ~ej,94 ar 1(>OOC, 4nt-) the hot dispersion 91,4 g Is added d~rlna 2C T,:r in -he f::rm cf a 30% solution in benzi-ne-rubber (boiling temperature rr~_-red `:r 30 minl;tes at 105-110oC and filtrated, the precipitate is wa,' hed wl,h 2.50 T.: cf .3:1vent; IV is obtained In the form of a colorless liquid, _'n alr rhe yield In 12 the boiling temrerat-jre 100-107cC/ ee 1~ .5 9 o 10 mir, d 0.872. The ailhcrs present two tables and schematic diagrams cf metallic appars,us -Ln4. eqil;ment lnclAdlng descriptions. S. Davydova 11"ransla-:-1 6 nz!-e '7h!5 is the full translation of the original Russian abstract. Card 2/2 0 /62/035/010/000/012 "/080 D204/U307 ixyukov, ;.I. and Farberov, I.I.I. .,otic syathcrea based on 2-methylpentene-1 (I) '1UiJ1(;"L: '"'liurnal )ril:ladnoy ItWiii, v. 35, no, 10, 1962, 22;19-2-*;;!4 a" 1'. T 11ropylene dimerized staooilily at 200 - 2200C, under 100 120 atm, , uith Al--.'t3 (*,isnolved in iso-octance as the catalyst, over a period of 1.5 hotirs, in nVarly qUaRntitative yields. The pro- duct, 1, was dincrized at 500(;V 70';! 112304 48 the catalyst in 30 min (O.ninun conditioiis), in up to , 80,~ yields w.r.t. the wcl~ht of the startin,r ..iatcrial. The dincrization of -I may also be carried out ci I/ -7itll 113;.'(J3 on hicaelguhr as the catalyst, at 120 - 1600C, under'20 U atm pressure, the hi~',hnst yield of the tatramer being - 50cla. In looth cases the conversions -jere practically quantitative, calculated on reacted 1. Ihcn 401; 11-2,;04 was used as the catalyst, I did not dimcriza', Init und(,ruent a *highly selective isomerization to 2-methyl- vcnteiie-2 at 25 - 300j, over a period of 2 hours. This reaction Card 1/2 S/080/62/035/010/008/012 Some syntheses, based or. D204/1)307 also proceeded rca-dily in the presence Of 113P(J3 on 1,,icsclguhr, at 120 - 1400ki, under a pres-sure of 10 - 30 atm; the conversions being nearly quantitative in both cases. At 10 - 200C, in the presence of 1',',)SC)4 and water, I was hydrated to 2-methylpentanol-2 over 30 min, w1th a nc~-.rly 100,~ cotiv,--!rsion. lith C1120t I condenseA at 5000, in the presence Of 112:;01~, to give (in 30'1" yield) 3-methyl-3-n-propyl- dio::an,-1,3, over j hours. I was also used0to alkylate beiizene, toluene a-Lid phenol, ovcr 112904, at '10 - 15 0 in ;Ood to excellent yields. The alkylation of'tolucnc with 1, over `11C13, was less effective. Thcrc arc 3 figures and 1 table. ASJACUNON: Yaroslavshiy telchnologicheakiy institut i nauchno- issledovatellskiy institut monomerov dlya Sk (Yaro- slav Technological Institute and Scientific Research Institute of Nonomers for Gynthetic Rubber) ~X31:ITT:,D: July 13, 1961 Card 2/2 s/2o4/63/003/001/003/013 E075/r.436 AUTHORS: Folldblyum, V.Sh., Komissarova, G.P., blyasnikova, L.D., Farberov, H.I. TITLE: The synthesis of isoprone from propylene. 1. Analysis of aluminium alkyls in the process of dimerization of propyleno PERIODICAL: Neftakhimiyat V-3, no.1, 1963, 13-19 TEXT: The aim of the work was to investigate the methods for tho analysis of activity and composition of aluminium alkylx. The analysis consists of determining the ratio of the "active" alumirMm in AlR3, where R - an organic radical, to total Al~ The methods used to determine the "active" Al were: 1) the indicator method of Razuvayev and Grayevskiy, 2) the Ziegler anunoniacal method, 3) the Tepenitayna-Farberova oxidation-reduction method, 4) decomposition of AIR3 with H20 with the subsequent measurement of the evolved gas volume. . The first two methods gave correct values of the activity but are tedious in operation. The authors improved the Ziegler method by using di- or trimethylamine iA place of N113, which greatly decreased the analysis time. Examination of Card 1/2 The synthesis of isoprene 5/204/63/003/001/003/013 E075/E436 AlR3 used several times for the catalysis of the dimerization of propylene showed that the first portion of the higher hydrocarbons (byproducts) forming during the reaction attach themselves to Al, or displace a part of' the lower alkyl groups in A1113. Thus AlR3 uscd aoveral times as catalyst is a complox mixtura of aluminium alkyls, the molecules of which contain propyl And inobutyl groups and at least one C9- C12 group. There are 2 figures and 2 tables. ASSOCIATION; Nauchno-issladovatellskiy institut itionomerov dlya SK Yaroslavskiy tokhnologicheakiy instiWt (Scientific Redearch Institute of Monomers for Synthetic Rubber, Yaroolav,Technological Institute) SUBMITTED: June 9, 1962 Card 2/2 S/2o4/63/003/001/004/013 E075/6436 AUTHORS:, Folldblyurd, V.Sh., Kryukov, S.I.-, Farberov, M.I.. Golovko, A.V., Tyurja_YiW-'_1..Ya., Pankov, A,G, TITLE: The synthesis of isoprene from propylene 2. Isomerization of 2-mothylpentene-I in the liquid phase in the presence of solid acidic catalysts PERIODICAL: Neftekhimiya, v-3, no.1, 1963, 20-27 TEXT: The object of the work was to isomerize 91.4% wt. pure 2-methylpentene-l in the liquid-phase using silica-alumina, cation exchange romin KY-1 (KU-1), pho~4phoric acid-kieseiguhr, alumina and silica Sol as catalysts. All experimonts were carried out at 100 and 1500C and at 75 to 125*C with KU-1 as catalyst. The isomarization is complicated by three secondary reactions, the main of which is the formation of dodecene (dimerization of isohexenes). A small amount of cracking gives amylencs (especially at the higher temperatures). Thore is also formation of small amounts of various isohexones. Silica gel and alumina were the least active catalysts. *1ith the rentaining more active catalysts the velocity of the main and secondary reactions was much Card 1/3 S/2o4/63/003/001/004/013 The synthesis of ... E075/E436 higher, the increased temperatures favoring the formation of do-decene and--decrea sing_ the -yiel-d-of --2-methylpentc ic-2. Isomeriza fi onof 9---me-thylpentene-1 W-to-2-methylpentene-2 (D)- with the formation of dodecenes (A24 AD and B2) proceeds as follows' K Kl K2 K3 A ___4 BI 2A ---) A29 A + B ---I A B 2B --) B2 The relativo values of K and KI, K2, K3 depend on the proton acidity of the catalysts. Thus their effectiveness may be obtaine4 from all these values. The catalysts were rated in the order of increasing activity: A1203 ~~ S102 < silica-alumina < 113PO4 - kieselguhr ~~KU-l. The effectiveness of acidic sites increases in the order KU-1