(SANITIZED)UNCLASSIFIED SOVIET PAPERS ON THE PROPAGATION OF ELECTROMAGNETIC WAVES AND SURFACE STATES OF GERMANIUM(SANITIZED)

Document Type: 
Collection: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP80T00246A015900050001-0
Release Decision: 
RIPPUB
Original Classification: 
C
Document Page Count: 
21
Document Creation Date: 
December 22, 2016
Document Release Date: 
November 8, 2011
Sequence Number: 
1
Case Number: 
Publication Date: 
April 10, 1962
Content Type: 
REPORT
File: 
AttachmentSize
PDF icon CIA-RDP80T00246A015900050001-0.pdf942.56 KB
Body: 
Declassified in Part -Sanitized Copy Approved for Release 2011/11/08 :CIA-RDP80T00246A015900050001-0 Next 1 Page(s) In Document Denied Q Declassified in Part -Sanitized Copy Approved for Release 2011/11/08 :CIA-RDP80T00246A015900050001-0 Declassified in Part - Sanitized Copy Approved for Release 2011/11/08: CIA-RDP80T00246A015900050001-0 T'i-l'~ -o ~ ~'~,~c T~v M ~ ~ !J ~2 C Wks ON PROPAGATION IN A OACTI PLAS1UfA AT BELOW THE PLASAdA FREQUENCY V,I. Aksenov 1. Introduction 'Tke o ~ e ~Qa''4'co rtict t1Q ~+c w a vQ S proBagation In a magnetoactive plasma at below the plasma frequency is both an intriguing and a pgorly investigated problem. jhis seems to warrant a laboratory experiment for its study. Q i iwt~Qa.Y' w~-odQ c0.Q~p~ Reference ~1j suggests he"'whistlez~?mode ~e~e-~- as a means for the diagnosis of a dense plasma and describes a relevant experiment carried out on the ZETA slow thermonuclear machine at Harwell, ~%ngland, The specific features of such a machine inevitably complicate experimentation. After a discussion of some theoretical points, this aut or suQgesta what he considers a simpler experi? ntal arrangement for the observation of microwave mode propaga- tion in a magnetoactive plasma at below the plasma frequen- 2, Some Pointe of 'theory A homogeneous plasma in a :nagnetic field is a bi-re~- Tractive medium, and its complex refractive index ~??~~, for two characteristic waves ordinary and extraordinary) will be gii~en by the equ~tion~~,'s ~ ~ T ,.. - K- .,, _. ,` 2 "~ N where (I ~ ~ ? f ~ , ~ N ?~ I (J_.li ~ ~ N is the plasma frequency; ~-a I l ~ H : L~., is the electron gyro frequency; is the electron density; Declassified in Part - Sanitized Copy Approved for Release 2011/11/08: CIA-RDP80T00246A015900050001-0 Declassified in Part - Sanitized Copy Approved for Release 2011/11/08: CIA-RDP80T00246A015900050001-0 ie~he angle between th? wave normal and the magnetic field j~ -n Q i h ~~t CQ e i pK is Zn equation (1)~~which neglect , the ~z[t~k ?ub?oript '1' and the "-" sign at the root refer to an extraordinary wave, while the subscript '2' and the +" sign are related to an ordinary wave. In a general case, equation (1) is too complicated for an investigation. Theref?re, we make some simplifying assumptions. For one thing, the collision frequency, ~ , is assumed small com- pared with W , and the quantity Sin equation (1) neglig*ble compared with unity. Secondly, we use what is known as the nazi lon itudinal a ~~ 0 . q - g pproximation n the basis of this approximation which is valid for ? ~~~ ~ t r when a 0, equation (1) may be replaced by a simpler erpaesaion for Z ~, 2 where ~~ ~ 2 = ~ _ u~ '/~ '~ ( 5 ) 2 ~,~ _ v-~ V U ~S ~ It should be noted that inequality (3) is valid for relatively large ~ (50 to 60?), provided ~7~ 1 and ~j ~, From n2 > Q and equation (4), it follows that charac- teristic mode propagation may occur either when A~ 2) or when A~~2 ~ 0. It may be shown that A~ 2 ~~ does not satisfy the conditions of the quazi-longitudinal approximate tion and ie therefore ruled out. At A~ 2 < dand.for an extraordinary wave (subscript 1) s we have bi?~ t ~ ~ . , 1 ~ ~~ i C~~d ~ + 2 (~-~? cd~ Declassified in Part - Sanitized Copy Approved for Release 2011/11/08: CIA-RDP80T00246A015900050001-0 Declassified in Part - Sanitized Copy Approved for Release 2011/11/08: CIA-RDP80T00246A015900050001-0 3. In view of (3), the conditions in (6) may be approxi- mated ae follows 1 < U u ? t~ dC or 1 < ~ rtrtl,ow~..'N~ ~`aw cu~t~t ~t~a.~e - o$Gw~ w~ d ou ~ S,u't~Ct t~ 4 cat pN Vt~,i/K.t O~t~l ~ M ~1R ~1'0 M ~ ~.rt ~I ~ r~ ~ ~ ~.~~~ ~b~, ~~ ~~~~~ ~~ W.t ~wv~ wu wa~col 'taw ~~ ~ ~w oCf3. v t Qor ~rtw~ ~~ uM~M vw ~~ ~. ~ "d ~~.~ ~ ~ ~o~~~~M I ~! Q~c C.~ ~+c ht~ ~h0 ta~~ C~ ttc ~~ow~ rVu ~ ~ N`~ Cw 't N ~ ~at~ ~,,ow aM~ a .fit ok ~{ ~ 'u cow~6~'~~oL c~.w~~ ; t-R~ .mac a {,~~t ~? KtQ 4~0 ~~ `' ~ h# w" _ ~ ~~~t~u ~,Iw~ ~~ow~ ~, ~, ~ ~' e~caii~ ~~~ .~ ~ C~~ . ~~j,~ h~( Q YtR ~~Oti MRS '~~ he GOiM~~rM ~~O v Y "? N.tQ,bi~t~~ t~tk ~s~e MNN ~t w r~ ~o~ows u, w c~'u~ ~t~o w ~o'`~F L. ~~ ~t ~c.t~ I/wb u. avw K~ ~ ~~~~ v~ ~~,,t c.i.~ ~t i N , f ,c',u .P.u l.~ Declassified in Part -Sanitized Copy Approved for Release 2011/11/08 :CIA-RDP80T00246A015900050001-0 Declassified in Part -Sanitized Copy Approved for Release 2011/11/08 :CIA-RDP80T00246A015900050001-0 . ~ ? ~ c~ ~c~l't ~; C ~ ~ k~ kJf k~ ~~ ~~wu~~ .~- 4~.. ~~ H au pow ~ ~~ ~ w~ ~ ~ c~~- tic ~~ ~ 1~e.u~+ ~'~~ ho~& ~~ ~ u HQXM~S ~'~' 1 h w Cv- 1 ~ w;' 2 1N ' ~,c,~ ~v~~ c~- tiz~ . ~.~?otic r~~t~ ,, ~ f ~f W1,M 1'r~ WI- ~~ 0~ ~i1~tZ 1F+~ ~fcs- ~ 9c1- ~d ~ ~ al u~ ~ t'~ ~~ y~ww ~ ~~ Q,t V~i~t ~ r. ~~ tW~~~ . pi~ ~~ 0 w a~ E-~td ti'x'~.~ r ~ ~.~ ~. 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