DYNAMICS OF LASER-ABLATED IRON IN NITROGEN ATMOSPHERE

被引：36

作者：

OHKOSHI, M

YOSHITAKE, T

TSUSHIMA, K

机构：

[1] Department of Computer Electronics, Faculty of Computer Science, Kyushu Institute of Technology

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 24期

关键词：

D O I：

10.1063/1.111272

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：3340 / 3342

页数：3

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