SPECTROSCOPIC SIGNATURE OF NON-MAXWELLIAN AND NONSTATIONARY EFFECTS IN PLASMAS HEATED BY INTENSE, ULTRASHORT LASER-PULSES

被引：52

作者：

MATTE, JP ^{[1
]}

KIEFFER, JC ^{[1
]}

ETHIER, S ^{[1
]}

CHAKER, M ^{[1
]}

PEYRUSSE, O ^{[1
]}

机构：

[1] CEA LIMEIL VALENTON,F-94195 VILLENEUVE ST GEO,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.72.1208

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interaction of an intense (10(16) W/cm(2)), ultrashort (400 fs) 1.06 mu m laser pulse normally incident on an aluminum preformed plasma was simulated with an electron kinetic code. Postprocessing with a detailed atomic model predicted the resulting K-shell x-ray spectrum. Both the very rapid time variation and the non-Maxwellian energy distribution (due to the steep gradients, energetic electrons stream from the hot into the cold plasma and enhance the excitation of Li-like satellites there) greatly modify the line ratios, even without any addition of hot electrons.

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页码：1208 / 1211

页数：4

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