Laser-hole boring into overdense plasmas measured with soft x-ray laser probing

被引：33

作者：

Takahashi, K

Kodama, R

Tanaka, KA

Hashimoto, H

Kato, Y

Mima, K

Weber, FA

Barbee, TW

Da Silva, LB

机构：

[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[2] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[3] Osaka Univ, Dept Electromagnet Engn, Suita, Osaka 5650871, Japan

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.84.2405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A laser self-focused channel formation into overdense plasmas was observed using a soft x-ray laser probe system with a grid image refractometry (GIR) technique. 1.053 mu m laser light with a 100 ps pulse duration was focused onto a preformed plasma at an intensity of 2 X 10(17) W/cm(2). Cross sections of the channel were obtained which show a 30 mu m diameter in overdense plasmas. The channel width in the overdense region was kept narrow as a result of self-focusing. Conically diverging density ridges were also observed along the channel, indicating a Mach cone created by a shock wave due to the supersonic propagation of the channel front.

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页码：2405 / 2408

页数：4

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