SPACE-RESOLVED AND TIME-RESOLVED KA ABSORPTION-SPECTROSCOPY OF A LASER-PRODUCED PLASMA

被引：6

作者：

GEINDRE, JP

CHENAISPOPOVICS, C

AUDEBERT, P

BACK, CA

GAUTHIER, JC

PEPIN, H

CHAKER, M

机构：

[1] INST NATL RECH SCI ENERGIE VARENNES, VARENNES, QUEBEC, CANADA

[2] ECOLE POLYTECH, UTILISAT LASERS INTENSES, F-91120 PALAISEAU, FRANCE

来源：

PHYSICAL REVIEW A | 1991年 / 43卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.43.3202

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have studied the space and time evolution of the dense part of a laser-produced plasma obtained on a target composed of a chlorinated plastic foil covered with a samarium layer. With point-projection K-alpha absorption spectroscopy we measured the optical depth and the electronic temperature of the radiatively heated plasma as a function of time and space. Radiative hydrocode simulations describe correctly the experimental results. The plasma zone radiatively heated at 50-80 eV by the laser-irradiated samarium soft x rays expands just after the laser maximum when the laser-induced pressure has decreased. The obtained dense plasma exhibits shallow density and temperature gradients and could be used for dense-plasma studies.

引用

页码：3202 / 3205

页数：4

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