Enhanced ion charge states in vacuum arc plasmas using a "current spike" method

被引：34

作者：

Bugaev, AS

Oks, EM

Yushkov, GY

Anders, A ^{[1
]}

Brown, IG

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[2] Russian Acad Sci, Inst High Current Elect, Tomsk 634050, Russia

[3] State Univ Control Syst & Radioelect, Tomsk 634050, Russia

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2000年 / 71卷 / 02期

关键词：

D O I：

10.1063/1.1150266

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Ion charge state distributions of vacuum arc ion sources are correlated to the arc operating voltage. An enhancement of ion charge state via an increase of the arc voltage can be achieved utilizing the transient processes that accompany an arc current spike. A current spike of 100-1000 A and several microseconds width was produced on top of the main arc current pulse (100 A, 250 mu s). The ion charge state distribution was measured by charge-to-mass spectrometry. The measured charge state distributions were used as input data to the plasma model of partial local Saha equilibrium, giving the time-dependent electron temperature of the plasma at the freezing zone near the cathode spot. (C) 2000 American Institute of Physics. [S0034-6748(00)56602-7].

引用

页码：701 / 703

页数：3

共 13 条

[1] Plasma fluctuations, local partial Saha equilibrium, and the broadening of vacuum-arc ion charge state distributions [J].