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D^-/H^- negative ion production versus plasma parameters in a volume negative ion source

Review of Scientific Instruments Volume 79 Issue 2 Page 02A507-
published_at 2008-01
2007020175.pdf
[fulltext] 452 KB
Title
D^-/H^- negative ion production versus plasma parameters in a volume negative ion source
Creators Mori Shigefumi
Creators Fukumasa Osamu
Pure volume production of D^- negative ions is studied in rectangular negative ion source equipped with an external magnetic filter (MF). Plasma parameters (n_e and T_e) in D_2 plasmas are varied mainly in the downstream region by changing the magnetic field intensity of the MF (i.e., B_<MF>). Production and control of D_2 plasma is nearly the same as that of H_2 plasmas, although the values of n_e and T_e in D_2 plasma are slightly higher than that of H_2 plasmas in both the source and the extraction regions. On D^-/H^- production, however, it appears some different points. By varying the B_<MF>, H^- production in the extraction region is remarkably changed corresponding to the variation of n_e and T_e in the extraction region. On the other hand, D^- production is not so varied under the same discharge conditions in H_2 plasmas. This difference in D^- production is not well explained only variation of n_e and T_e in D_2 plasmas. Optimum B_<MF> and gas pressure for D^? production is slightly higher than that for H^? production.
Languages eng
Resource Type journal article
Publishers American Institute of Physics
Date Issued 2008-01
Rights
c2008 American Institute of Physics()
File Version Version of Record
Access Rights open access
Relations
[ISSN]0034-6748
[NCID]AA00817730
info:doi/10.1063/1.2802594
[isVersionOf] [URI]http://rsi.aip.org/rsi/
Schools 大学院理工学研究科(工学)