TIME-RESOLVED STUDY OF HOT DENSE GERMANIUM BY L-SHELL ABSORPTION-SPECTROSCOPY

被引：25

作者：

BRUNEAU, J ^{[1
]}

DECOSTER, A ^{[1
]}

DESENNE, D ^{[1
]}

DUMONT, H ^{[1
]}

LEBRETON, JP ^{[1
]}

BOIVINEAU, M ^{[1
]}

PERRINE, JP ^{[1
]}

BAYLE, S ^{[1
]}

LOUISJACQUET, M ^{[1
]}

GEINDRE, JP ^{[1
]}

CHENAISPOPOVICS, C ^{[1
]}

GAUTHIER, JC ^{[1
]}

机构：

[1] ECOLE POLYTECH, PHYS MILIEUX IONISES LAB, F-91128 PALAISEAU, FRANCE

来源：

PHYSICAL REVIEW A | 1991年 / 44卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.44.R832

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have used time-resolved 2p-3d absorption spectroscopy to probe the ionization degree of a germanium plasma heated by the soft x rays emitted from the rear side of laser-irradiated gold targets. We have determined the average ionization degree and the distribution of ion stages as a function of time during the expanding, cooling phase of the plasma. They have been compared with collisional-radiative distributions based on hydrodynamic simulations of the plasma parameters. Results show a slow decrease of the ionization degree from <Z> = 11.5 to 10.0 during a 3-ns period after gold heating. Comparison with theoretical spectra show matter densities around 0.01 g/cm3 and temperatures of about 50 eV.

引用

页码：R832 / R835

页数：4

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