Pulsed laser ablation of Ni in vacuum and N{sub 2} atmosphere at various fluences
- Centre for Advanced Studies in Physics, GC University Lahore (Pakistan)
- Department of Physics, GC University Lahore (Pakistan)
Mechanisms of Ni ablation in vacuum and N{sub 2} atmosphere at various fluences ranging from 2.1 J cm{sup -2} to 3.4 J cm{sup -2} are studied by using a KrF excimer laser. The formation of various conical microstructures, ripples, large-sized irregular shaped cavities and pits is found. It is shown that no new phases are formed in the case of Ni ablation in vacuum, while new phases of nitrides and nitrooxides appear in the N{sub 2} environment. The microhardness analysis of targets irradiated in vacuum shows a decreasing trend with increasing fluence, whereas in the case of the N{sub 2} environment, a monotonic increase in hardness with increasing fluence is observed. (interaction of laser radiation with matter. laser plasma)
- OSTI ID:
- 22551221
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 45, Issue 7; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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