LASER-INDUCED STIMULATED-EMISSION FOR HYDROGEN-ATOM DENSITY-MEASUREMENTS IN A HYDROGEN PULSED MICROWAVE-DISCHARGE

Authors
TOMASINI L ROUSSEAU A BARAVIAN G GOUSSET G LEPRINCE P
Citation
L. Tomasini et al., LASER-INDUCED STIMULATED-EMISSION FOR HYDROGEN-ATOM DENSITY-MEASUREMENTS IN A HYDROGEN PULSED MICROWAVE-DISCHARGE, Applied physics letters, 69(11), 1996, pp. 1553-1555
Citations number
12
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
69
Issue
11
Year of publication
1996
Pages
1553 - 1555
Database
ISI
SICI code
0003-6951(1996)69:11<1553:LSFHD>2.0.ZU;2-B
Abstract
The laser induced stimulated emission (LISE) of the Balmer ct line is used to measure the ground state hydrogen atom density in an efficient source of hydrogen atoms generated by a low-pressure (1 Torr), pulsed microwave discharge at 2.45 GHz. The H atom kinetics in pure hydrogen discharges and in hydrogen-air mixture discharges are compared. It is shown that, for high atomic density and long plasma length crossing, the LISE. Balmer alpha line is partially absorbed by the plasma. This provides an estimation of the H(n=2) atom density. (C) 1996 American I nstitute of Physics.