Influence of spot size on propagation dynamics of laser-produced tin plasma

被引：83

作者：

Harilal, S. S. ^{[1
]}

机构：

[1] Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 102卷 / 12期

关键词：

D O I：

10.1063/1.2822450

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The plume dynamics in the presence of an ambient gas is very intriguing physics. The expansion of a laser-produced plasma in the presence of an ambient gas leads to internal plume structures, plume splitting, sharpening, confinement, etc. We investigated propagation dynamics of an expanding tin plume for various spot sizes using a fast visible plume imaging and Faraday cup diagnostic tools. Our results indicate that the sharpening of the plume depends strongly on the spot size. With a smaller spot size, the lateral expansion is found to be higher and the plume expansion is spherical while with a larger spot size the plume expansion is more cylindrical. Analysis of time resolved imaging also showed internal structures inside the plume. (c) 2007 American Institute of Physics.

引用

页数：6

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