Plasma-wall interaction in ATC during high power neutral beam injection

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Measurements of the elemental composition of the vacuum vessel wall surface and impurity influx into ATC during high power beam-heated discharges are combined with previous measurements of power balance and scaling laws to give a self consistent model of plasma-wall interaction in ATC. It is shown that plasma charge exchange induced desorption is the main cause of impurity influx during neutral beam injection. Impurities change the net power balance in these beam- heated discharges by approximately 15 percent. (auth)

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Pages: 21

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Cohen, S.A. January 1, 1976.

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Description

Measurements of the elemental composition of the vacuum vessel wall surface and impurity influx into ATC during high power beam-heated discharges are combined with previous measurements of power balance and scaling laws to give a self consistent model of plasma-wall interaction in ATC. It is shown that plasma charge exchange induced desorption is the main cause of impurity influx during neutral beam injection. Impurities change the net power balance in these beam- heated discharges by approximately 15 percent. (auth)

Physical Description

Pages: 21

Notes

Dep. NTIS

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  • 2. international conference on surface effects in controlled fusion devices, San Francisco, California, United States of America (USA), 16 Feb 1976

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  • Report No.: CONF-760209--4
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4028875
  • Archival Resource Key: ark:/67531/metadc866855

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  • January 1, 1976

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 27, 2016, 7:39 p.m.

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Cohen, S.A. Plasma-wall interaction in ATC during high power neutral beam injection, article, January 1, 1976; New Jersey. (digital.library.unt.edu/ark:/67531/metadc866855/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.