Temporal and spectral dependence of samarium X-ray emission in subpicosecond and nanosecond laser-produced plasmas.

被引：1

作者：

Chenais-Popovics, C ^{[1
]}

Audebert, P ^{[1
]}

Fajardo, M ^{[1
]}

Sheperd, R ^{[1
]}

Peyrusse, O ^{[1
]}

Gauthier, JC ^{[1
]}

机构：

[1] Univ Paris 06, Ecole Polytech, CEA,Lab Utilisat Lasers Intenses, CNRS,UMR 7605, F-91128 Palaiseau, France

来源：

APPLICATIONS OF X RAYS GENERATED FROM LASERS AND OTHER BRIGHT SOURCES II | 2001年 / 4504卷

关键词：

X-ray source; absorption spectroscopy; laser-produced-plasma; subpicosecond resolution;

D O I：

10.1117/12.448473

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Ultra-short X-ray sources are generated by focusing sub-picosecond lasers on massive targets. The emission duration of a samarium X-ray source produced with a 100 TW sub-picosecond laser was measured using an ultra-fast X-ray streak camera. The spectral range was limited around 7.5-8.5 Angstrom, the range in which samarium can be used as a backlighter for Kalpha aluminum absorption experiments. The spectral time-evolution and the duration of samarium emission were measured. Preliminary calculations performed with non-local-thermodynamic equilibrium atomic physics show the plasma cooling which occurs with a characteristic time longer than predicted by radiative hydrocode simulaitons.

引用

页码：194 / 197

页数：4

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