Berkl, E.

Eckhartt, D.

Grieger, G.

v. Gierke, G.

English

MPG.PuRe

- 62 - WED B 2 RESISTIVE DIFFUSION OF CESIUM PLASMA IN A STELLARATOR by E. Berkl. D. Eckhartt, G. v ,Gierke. G. Grieger Inst1.tut fUr Plasmaphys1k, Garchlng b . t-Itinchen Abstract At the CuI ham conference we reported on measurements of particle losses from cesium plasmas produced by contact ionization in our vffiNDELSTEIN stellarator. which was equipped with helical stabilizing windings of type t ~ 2 1) We found particle loss rates to be much less than the anomalously high pump - out losses usually encountered in stellarators. Moreover. the relationship observed beh'een 10n lnpl.lt 1'1l.lx and the resLlltan t pal'tlcle density distribution was 1n agreement with calcl.llations which assumed resistive 91ffusion across the magnetic confining field and recombination on the lns~latlne surraces or t he s~pport8 of the plasma so~rce , t he latter constit~ting the predominant loss process . In recent experiments, Wilich will be described 1n this paper, surface recombination l osses within the plasma volume could be made negligibly small. This was done by s~spend~ng the plasma so~rce from a very thin wire and heating it by bombardment with a beam of energetic electrons. In t his way it was possible to shnw that the radial transport of the cesium plasma is governed by resistive diffusion. 1) D. Eckhartt, G. v .Gierke, G, Grieger, Proceedings of the IAEA Conference on Plasma Physics and Controlled Nuclear F~sion Research, Culham (U.K.), Vol . rI, 719 (1966 ) 

Resisitive Diffusion of Cesium Plasma in a Stellarator

http://hdl.handle.net/21.11116/0000-0008-B983-3

Resisitive Diffusion of Cesium Plasma in a Stellarator

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