Angular emission and self-absorption studies of a tin laser produced plasma extreme ultraviolet source between 10 and 18 nm
Angular emission and self-absorption studies of a tin laser produced plasma extreme ultraviolet source between 10 and 18 nm
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DOI：
10.1063/1.2945645
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发表时间：
2008-06
影响因子：
4
通讯作者：
O. Morris;F. O’Reilly;P. Dunne;P. Hayden
中科院分区：
文献类型：
--
作者：
O. Morris;F. O’Reilly;P. Dunne;P. Hayden
锡激光器产生的等离子体的极紫外光谱已在与目标法线成 20° 至 90° 的角度范围内记录下来。绝对强度测量显示了以 13.5 nm 为中心的 2% 波段以及 10 至 18 nm 之间等离子体发射的总辐射。在与目标法线成 60° 的角度范围内，带内强度相对恒定，超过该角度后，带内强度会急剧下降。波长大于 13.5 nm 的光谱受到 6+ 至 10+ 离子自吸收的强烈影响。
Extreme ultraviolet spectra from a tin laser produced plasma have been recorded over a range of angles between 20° and 90° from the target normal. Absolute intensity measurements are presented of both the 2% band centered on 13.5nm and the total radiation emitted by the plasma between 10 and 18nm. The in-band intensity is seen to be relatively constant out to an angle of 60° from the target normal, beyond which it drops off quite steeply. The spectra at wavelengths greater than 13.5nm are strongly influenced by self-absorption by ions ranging from 6+ to 10+.