Dynamics of laser-ablated iron in nitrogen atmosphere

M. Ohkoshi, T. Yoshitake, K. Tsushima

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Fast photography with a framing streak camera is applied to investigate the dynamics of ablated Fe particles by a pulsed excimer laser when a nitrogen atmosphere is present. Two stages of expansion are found in the generated plume. The first one starts just after the laser irradiation where the hemispherical and unidirectional plumes are found simultaneously. The dynamics of the unidirectional plume is described by a drag model for 300 ns. The second stage occurs at 300 ns, and the unidirectional plume expands again in agreement with a delayed blast wave model. The thickness distribution of the deposited Fe-N film is well correlated with the change in the plume geometry, then with the nitrogen pressure.

Original languageEnglish
Pages (from-to)3340-3342
Number of pages3
JournalApplied Physics Letters
Volume64
Issue number24
DOIs
Publication statusPublished - Dec 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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