The direct measurement of ablation pressure driven by 351-nm laser radiation

被引：44

作者：

Fratanduono, D. E. ^{[1
,2
,3
]}

Boehly, T. R. ^{[1
]}

Celliers, P. M. ^{[3
]}

Barrios, M. A. ^{[1
,4
]}

Eggert, J. H. ^{[3
]}

Smith, R. F. ^{[3
]}

Hicks, D. G. ^{[3
]}

Collins, G. W. ^{[3
]}

Meyerhofer, D. D. ^{[1
,2
,4
]}

机构：

[1] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

[2] Univ Rochester, Dept Mech Engn, Rochester, NY 14623 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[4] Univ Rochester, Dept Phys & Astron, Rochester, NY 14623 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 110卷 / 07期

关键词：

PHASE PLATES; FUSION; PLANAR; PLASMA; FOILS; MODEL;

D O I：

10.1063/1.3646554

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The instantaneous scaling of ablation pressure to laser intensity is directly inferred for ramp compression of diamond targets irradiated by 351-nm light. Continuously increasing pressure profiles from 100 to 970 GPa are produced by direct-drive laser ablation at intensities up to 7 x 10(13) W/cm(2). The free-surface velocity on the rear of the target is used to directly infer the instantaneous ablation-pressure profile at the front of the target. The laser intensity on target is determined by laser power measurements and fully characterized laser spots. The ablation pressure is found to depend on the laser intensity as P(GPa) = 42(+/- 3)[I(TW/cm(2))](0.71(+/- 0.01)). (C) 2011 American Institute of Physics. [doi:10.1063/1.3646554]

引用

页数：4

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