期刊
APPLIED PHYSICS LETTERS
卷 103, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4829487
关键词
-
资金
- US DOE, Office of National Nuclear Security Administration [DE-NA0001174]
We investigated the role of ambient gas pressure on the expansion and the emission features during ultrafast laser ablation of metal target. Plasma plumes were generated using 800 nm, 40 fs laser pulses on a copper target and the ambient air pressure was varied more than seven orders (1 x 10(-5) -760 Torr) of magnitude. Fast-gated images showed a complex interaction between the plume and ambient leading to changes in the plume geometry with pressure as well as time. The ambient pressure levels are found to affect both the line intensities and broadening along with signal to noise (S/N) and signal to background (S/B) ratios. The optimum pressure condition for analytical applications is found to be similar to 100 Torr. (c) 2013 AIP Publishing LLC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据