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Proceedings Paper

Influence of laser irradiance and helium ambient on the expansion of laser-produced carbon plasma
Author(s): S. S. Harilal; C. V. Bindhu; V. P. N. Nampoori; C. P. G. Vallabhan
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Paper Abstract

The emission features of laser ablated carbon plasma plume generated in helium ambient have been investigated with time resolved plasma diagnostic technique. At lower irradiance levels only a slowly propagating C2 component is seen. At higher irradiance levels, emission from C2 shows a twin peak distribution in time. The present results also show that the helium ambient pressure and laser irradiance has opposite effects on the time of flight profiles of C2 species. A simple adiabatic expansion model appears to provide a good description of the plume range and this may provide useful for scaling deposition experiments in terms of pressure and laser irradiance.

Paper Details

Date Published: 23 April 2001
PDF: 4 pages
Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); doi: 10.1117/12.425547
Show Author Affiliations
S. S. Harilal, Ruhr Univ. Bochum (United States)
C. V. Bindhu, Ruhr Univ. Bochum (India)
V. P. N. Nampoori, Cochin Univ. of Science and Technology (India)
C. P. G. Vallabhan, Cochin Univ. of Science and Technology (India)

Published in SPIE Proceedings Vol. 4424:
ECLIM 2000: 26th European Conference on Laser Interaction with Matter
Milan Kalal; Karel Rohlena; Milan Sinor, Editor(s)

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