ELECTRIC-FIELD MEASUREMENTS IN DISCHARGES BY 2+1 PHOTON LASER STARK SPECTROSCOPY OF ATOMIC-HYDROGEN

被引：40
|
作者：
BOOTH, JP
FADLALLAH, M
DEROUARD, J
SADEGHI, N
机构：
[1] Laboratoire de Spectrométrie Physique, Université Joseph Fourier de Grenoble, 38402 St. Martin d'Heres Cedex
来源：
APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 07期
关键词：
D O I：
10.1063/1.112241
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have developed a new method for measuring electric field magnitude using 2 + 1 photon laser-induced fluorescence of ground-state hydrogen atoms. The atoms are excited to the n = 2 level by two 243-nm photons, then further excited to the n = 6 level by one photon at 41 0 nm and detected by cascaded H(alpha) fluorescence. The electric field magnitude is deduced from the Stark splitting of the n = 6 level. The method was calibrated using H atoms from a distant source flowing through a region of known electric field. Results are presented for field profiles in dc discharges in 0.3 and 1 Torr pure H-2.
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页码：819 / 821
页数：3
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