Measurements of local electric fields in low density Plasmas via stark-splitting of hydrogen resonance lines

被引：0

作者：

Steiger, A ^{[1
]}

Grützmacher, K ^{[1
]}

Pérez, C ^{[1
]}

de la Rosa, MI ^{[1
]}

Seidel, J ^{[1
]}

机构：

[1] Phys Tech Bundesanstalt, D-10587 Berlin, Germany

来源：

SPECTRAL LINE SHAPES | 2002年 / 645卷

关键词：

D O I：

暂无

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 aim of this paper is to discuss in detail the schemes for electric field measurements in low density plasmas via Stark-splitting of the first two hydrogen resonance lines. Beyond it, we have proved by experiment that advanced UV-Iaser spectrometers, especially developed for two-photon spectroscopy of plasmas, are well suited for this purpose. As a first demonstration at low electric fields, simple opto-galvanic detection was chosen for measuring the Stark-splitting of the Doppler-free 1S-2S and 1S-3S/D two-photon transition of atomic hydrogen produced by thermal dissociation in a small reference cell. In addition, we have performed measurements in a hollow cathode discharge which provides higher electric fields in its cathode fall region and the I is spectrum was detected spatially resolved by means of an opto-galvanic signal and polarization spectroscopy as well. Finally, another detection scheme, namely two-photon induced Balmer-alpha fluorescence applied as sheet diagnostic will be described.

引用

页码：86 / 93

页数：8