Efficient generation of negative hydrogen ions in a low-voltage cesium-hydrogen discharge

被引：5

作者：

Baksht, FG ^{[1
]}

Elizarov, LI ^{[1
]}

Ivanov, VG ^{[1
]}

Kon'kov, SI ^{[1
]}

Mitrofanov, NK ^{[1
]}

Shkol'nik, SM ^{[1
]}

机构：

[1] Russian Acad Sci, Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PLASMA PHYSICS REPORTS | 2003年 / 29卷 / 03期

关键词：

Hydrogen; Radiation; Excited State; Laser Radiation; Emission Intensity;

D O I：

10.1134/1.1561118

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The possibility of achieving the high density of negative hydrogen ions NH- in a low-voltage cesium-hydrogen discharge is investigated. The NH- density is determined experimentally from the absorption of laser radiation due to the photodetachment of electrons from H- ions. The discharge plasma is investigated by the probe technique. The populations of the excited states of Cs atoms are determined from their emission intensities. With an input power of W approximate to (15-25) W/cm(2) in the discharge, densities of N-H_ similar to (10(12 _) 10(13)) cm(-3) are achieved. The self-consistent calculations of the plasma parameters in the discharge gap agree well with the experimental results. The absorption of laser radiation due to the photoionization of Cs atoms is investigated. It is shown that the role of this absorption mechanism is negligible. (C) 2003 MAIK "Nauka/Interperiodica".

引用

页码：231 / 234

页数：4

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