THE SEPARATION OF ISOTOPES OF NOBLE GASES IN STATIONARY HIGH FREQUENCY DISCHARGE WITH TRAVELLING MAGNETIC FIELD
Le Journal de Physique Colloques
Several papers /1+3/ are devoted t o research of separation properties of high frequency discharge with travelling magnetic f i e l d . It i s shown, t h a t the discharge of such a kind i s able t o separ a t e isotopes and gas mixtures. The separation of gas mixtures i s connected in t h e f i r s t of a l l , with different ionizat i o n degree of components. The mechanism of isotope separation has not been cleared up f u l l y yet.As probable causes of isotope separation the processes of
... odiffusion and thermodifasion were point e d out. It i s proposed /2/,that the observed isotope separation i s connected with thermodiffusion in the neutral plasma component. m e reference t o the barodiffusion separation mechanism i s support e d by t h e f a c t t h a t i n some conditions /1,3/ t h e coincidence of t h e measured enrichment coefficient & with t h e calcuthe formula , whe~e, and are of t h e discharge chamber , p i s atomic weight. It was expedient t o find out how widely such Fig. I. B p erimental arrangement er. 'Phe discharge chamber was placed in t h e solenoid of t h e delay l i n e (2),which consisted of 60 c e l l s . The length of the solenoid was 85cm.The phase velocity of t h e wave Ipp = 5 +9 lo6 cx , frequency f = 80 +46O1Hz* The amplitude of Hz-component of t h e magnetic f i e l d on t h e axis of t h e solenoid a t varieng t h e generator frequency in the above mentioned range decreased from 100 t o 20 ", .me power dissipated in t h e discharge was simple regularity of isotope separation 2 + 14 kw. effect in plasma takes place. Aiming a t t h i s t h e comparative investigation o f isotope separation of three gases,which considerably d i f f e r i n t h e i r atomic weight: xenon, krypton and neon, was carried out. The scheme of the apparatus is shown in Fig.1. !Phe discharge was exited b i t h e water-cooled quartz chamber ( I ) IlOcm long and with the 6,5cm in diamet-The interaction of t h e travelling wave with plasma r e s u l t s i n the appearance of t h e pressure difference &P=@-PL in t h e closed-ended chamber. The value of A P i s in a good agreement with t h e w formula: AP r -(tt/-dissipat ed power, 5 -oros&i%%ion of the chamber) In t h e experiments the value of A P reached 2,s (0-tn6 t h e discharges with t h e same value of AP the relation Article published online by EDP Sciences and available at http://dx.