On the influence of surface condition on air plasma formation near metals irradiated by microsecond TEA CO2laser pulses
- 14 April 1984
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 17 (4) , 709-720
- https://doi.org/10.1088/0022-3727/17/4/010
Abstract
A systematic electron microscopy analysis is performed of the defects on metallic surfaces, either pre-existing or introduced by processing or as a result of powerful laser irradiation. Metallic and nonmetallic defects were revealed with a vaporisation threshold lower than that of an ideal plane metallic surface. This lower threshold might lead to a lowering of the breakdown threshold of a gas in the neighbourhood of the metallic target.Keywords
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