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フルテキストURL2007010011.pdf ( 799.4KB ) 公開日 2010-04-16
タイトルVolume production of D- negative ions in low-pressure D 2 plasmas - Negative ion densities versus plasma parameters
作成者Fukumasa, Osamu
Mori, Shigefumi
作成者ヨミフクマサ, オサム
作成者別表記福政, 修
作成者所属山口大学大学院理工学研究科(工学)
内容記述(抄録等)Pure volume production of D- negative ions is studied in a rectangular arc chamber. Production and control of D2 plasmas are tested by varying the intensity of the magnetic filter MF. The values of electron temperature Te and electron density ne in D2 plasmas are slightly higher than those in H2 plasmas. Te in D2 plasmas cannot be decreased below 1 eV in the extraction region with the same MF conditions for optimizing H2 plasmas. A stronger MF field is required for controlling Te in D2 plasmas. Therefore, the transport in or the production of H2 and D2 plasmas is different, i.e. there is an isotope effect, a consequence of which is that the H- and D- densities have different spatial distributions. Extracted H- and D- currents are primarily determined by H- and D- densities in front of the extraction hole, respectively. According to the estimated rate coefficients and collision frequencies of main collision processes, it is reconfirmed that Te in the extraction region should be maintained below 1 eV with ne kept high for the enhancement of H- and D- production. For the enhancement of D- production, preliminary results on VUV emission measurement are presented and discussed briefly.
本文言語eng
資料タイプtext
ファイル形式application/pdf
出版者International Atomic Energy Agency
NII資料タイプ学術雑誌論文
査読の有無査読あり
ISSN0029-5515
NCIDAA00759871
掲載誌名Nuclear Fusion
46
6
開始ページS287
終了ページS296
発行日2006-06
DOIinfo:doi/10.1088/0029-5515/46/6/S09
関連情報URL(IsPartOf)http://www.iop.org/EJ/journal/0029-5515/1
著者版/出版社版出版社版
リポジトリID2007010011
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/2007010011