OBSERVATION OF RADIATIVE BURNTHROUGH IN X-RAY HEATED BERYLLIUM BY TIME-RESOLVED SPECTROSCOPY

被引：33
作者：
SCHWANDA, W
EIDMANN, K
机构：
[1] Max-Planck-Institut für Quantenoptik
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.69.3507
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A 0.5-mum-thick beryllium foil is heated by thermal x rays from a laser-irradiated converter foil up to temperatures of a few 10 eV. During the transformation of the solid Be into an ionized gas time-resolved absorption spectra have been measured in the region 100 eV less than or similar to hv less than or similar to 250 eV. The measurements agree well with calculations of the radiation transport, for which electron-impact line broadening was found to be essential. Smoothing of the Be K edge observed in the beginning of the heating, when the foil is still in a partially degenerate state, is attributed to thermal smoothing of the Fermi edge.
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页码：3507 / 3510
页数：4
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