Recovery of cesium in the hydrogen negative ion sources

被引：8
|
作者：
Belchenko, YI [1 ]
Oka, Y
Kaneko, O
Takeiri, Y
Krivenko, AS
Osakabe, M
Tsumori, K
Asano, E
Kawamoto, T
Akiyama, R
机构：
[1] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[2] Natl Inst Fus Sci, Toki 5095292, Japan
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2000年 / 71卷 / 02期
关键词：
D O I：
10.1063/1.1150280
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Cesium recovery from the polluted layers in the 1/3 scale hydrogen negative ion source for LHD-NBI system has tested. It was found that the cesium recovery can be produced by additional discharges as from the cesium layer, aged by tungsten and residual gas, so as from the cesium layers, polluted by an occasional water leak. The highest cesium recovery to negative ion production was produced by a xenon arc, while glow discharge and arcing in hydrogen were less effective. The mechanism of recovery is the ejection of cesium from the underlying enriched layer by the arc and its transport to the surface. (C) 2000 American Institute of Physics. [S0034-6748(00)57202-5].
引用
收藏
页码：741 / 743
页数：3
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