Absolute atomic hydrogen density distribution in a hollow cathode discharge by two-photon polarization spectroscopy

被引：9

作者：

Gonzalo, AB ^{[1
]}

de la Rosa, MI

Pérez, C

Mar, S

Grützmacher, K

机构：

[1] Univ Valladolid, Dept Opt & Fis Aplicada, Valladolid 47071, Spain

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

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2004年 / 13卷 / 01期

关键词：

D O I：

10.1088/0963-0252/13/1/019

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：

We report on quantitative measurements of ground-state atomic hydrogen densities in a stationary plasma far off thermodynamic equilibrium, generated in a hollow cathode discharge, by two-photon polarization spectroscopy via the 1S-2S transition. Absolute densities are obtained using a well established calibration method based on the non-resonant two-photon polarization signal of xenon gas at room temperature, which serves as the reference at the wavelength of the hydrogen transition. This study is dedicated to demonstrating the capability of two-photon polarization spectroscopy close to the detection limit. Therefore, it requires single-longitudinal mode UV-laser radiation provided by an advanced UV-laser spectrometer.

引用

页码：150 / 155

页数：6

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