Influence of laser irradiance and helium ambient on the expansion of laser-produced carbon plasma

S. S. Harilal; C. V. Bindhu; V. P. N. Nampoori; C. P. G. Vallabhan

doi:10.1117/12.425547

23 April 2001 Influence of laser irradiance and helium ambient on the expansion of laser-produced carbon plasma

S. S. Harilal, C. V. Bindhu, V. P. N. Nampoori, C. P. G. Vallabhan

Proceedings Volume 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter; (2001) https://doi.org/10.1117/12.425547
Event: 26th European Conference on Laser Interaction with Matter (ECLIM 2000), 2000, Prague, Czech Republic

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.

Citation Download Citation

S. S. Harilal, C. V. Bindhu, V. P. N. Nampoori, and C. P. G. Vallabhan "Influence of laser irradiance and helium ambient on the expansion of laser-produced carbon plasma", Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); https://doi.org/10.1117/12.425547

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