Blast wave diagnostic for the Petawatt laser system

被引：3

作者：

Budil, KS ^{[1
]}

Gold, DM ^{[1
]}

Estabrook, KG ^{[1
]}

Remington, BA ^{[1
]}

Kane, J ^{[1
]}

Bell, PM ^{[1
]}

Pennington, D ^{[1
]}

Brown, C ^{[1
]}

Hatchett, S ^{[1
]}

Koch, JA ^{[1
]}

Key, MH ^{[1
]}

Perry, MD ^{[1
]}

机构：

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

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1999年 / 70卷 / 01期

关键词：

D O I：

10.1063/1.1149277

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report on a diagnostic to measure the trajectory of a blast wave propagating through a plastic target 400 mu m thick. This blast wave is generated by the irradiation of the front surface of the target with similar to 400 J of 1 mu m laser radiation in a 20 ps pulse focused to similar to 50 mu m diameter spot, which produces an intensity in excess of 10(18) W/cm(2). These conditions approximate a point explosion and a blast wave is predicted to be generated with an initial pressure nearing 1 Gbar which decays as it travels approximately radially outward from the interaction region. We have utilized streaked optical pyrometry of the blast front to determine its time of arrival at the rear surface of the target. Applications of a self-similar Taylor-Sedov blast wave solution allows the amount of energy deposited to be estimated. The experiment, LASNEX design simulations and initial results are discussed. (C) 1999 American Institute of Physics. [S0034-6748(99)58301-9].

引用

页码：806 / 809

页数：4

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