OPTICAL-EMISSION STUDIES OF C-2 SPECIES IN LASER-PRODUCED PLASMA FROMCARBON

Authors
HARILAL SS ISSAC RC BINDHU CV NAMPOORI VPN VALLABHAN CPG
Citation
Ss. Harilal et al., OPTICAL-EMISSION STUDIES OF C-2 SPECIES IN LASER-PRODUCED PLASMA FROMCARBON, Journal of physics. D, Applied physics, 30(12), 1997, pp. 1703-1709
Citations number
29
Categorie Soggetti
Physics, Applied
Journal title
Journal of physics. D, Applied physics → ACNP
ISSN journal
00223727
Volume
30
Issue
12
Year of publication
1997
Pages
1703 - 1709
Database
ISI
SICI code
0022-3727(1997)30:12<1703:OSOCSI>2.0.ZU;2-M
Abstract
Optical emission studies of C-2 molecules in plasma obtained by Nd:YAG laser ablation of graphite in a helium atmosphere are reported for ir radiances in the range (1-9.2) x 10(10) W cm(-2). The characteristics of the spectral emission intensity from the C-2 (Swan band) species ha ve been investigated as functions of the distance from the target, amb ient pressure and laser irradiance. Estimates of vibrational temperatu res of C-2 species under various irradiance conditions are made. Resul ts of measurements performed under different ambient helium gas pressu res are also discussed.