MEASUREMENT OF H- DENSITY IN PLASMA BY PHOTODETACHMENT

被引：134

作者：

BACAL, M ^{[1
]}

HAMILTON, GW ^{[1
]}

BRUNETEAU, AM ^{[1
]}

DOUCET, HJ ^{[1
]}

TAILLET, J ^{[1
]}

机构：

[1] OFF NATL ETUD & RECH AEROSP,F-92320 CHATILLON,FRANCE

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1979年 / 50卷 / 06期

关键词：

D O I：

10.1063/1.1135906

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Techniques have been developed for measurement of the density of H - in a plasma by photodetachment. Photodetachment is detected by the increase in electron density with no change in positive ion density after a light pulse from a ruby laser. The authenticity of photodetachment signals can be assured by their comparison with known cross sections for photodetachment of H-. Interpretations of photodetachment data are less ambiguous than probe interpretations because photodetachment is not affected by the mass of positive ions and is not limited in usefulness by the Debye distance. Photodetachment measurements with time resolution and spatial resolution are straightforward.

引用

页码：719 / 721

页数：3