Hard x-ray emission in high intensity femtosecond laser-target interaction

被引：140

作者：

Yu, J ^{[1
]}

Jiang, Z

Kieffer, JC

Krol, A

机构：

[1] Univ Quebec, INRS Energie & Mat, Varennes, PQ J3X 1S2, Canada

[2] SUNY Hlth Sci Ctr, Dept Radiol, Syracuse, NY 13210 USA

来源：

PHYSICS OF PLASMAS | 1999年 / 6卷 / 04期

关键词：

D O I：

10.1063/1.873372

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Hard x-ray spectra (10-100 keV) created in high contrast, 400 fs, laser pulse interaction with solid targets, have been studied for laser intensities in the 10(17)-10(19) W/cm(2) range. The target atomic numbers (Z) extended from Z=13 to Z=73. The measured conversion efficiency at Ag K-alpha emission line was 10(-3)% at 5 x 10(18) W/cm(2). It has been confirmed that the hot electron temperature increased as (I lambda(2))(1/3) and the fraction of laser energy in hot electrons follows scaling law of (I lambda(2))(3/4). (C) 1999 American Institute of Physics. [S1070-664X(99)02004-2].

引用

页码：1318 / 1322

页数：5

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