High-intensity laser-plasma interaction with wedge-shaped-cavity targets

被引：12

作者：

Theobald, W. ^{[1
]}

Ovchinnikov, V. ^{[2
]}

Ivancic, S. ^{[1
,4
]}

Eichman, B. ^{[1
,5
]}

Nilson, P. M. ^{[1
,6
]}

Delettrez, J. A. ^{[1
]}

Yan, R. ^{[1
]}

Li, G. ^{[1
]}

Marshall, F. J. ^{[1
]}

Meyerhofer, D. D. ^{[1
,4
,5
,6
]}

Myatt, J. F. ^{[1
]}

Ren, C. ^{[1
,4
,5
,6
]}

Sangster, T. C. ^{[1
]}

Stoeckl, C. ^{[1
]}

Zuegel, J. D. ^{[1
]}

Van Woerkom, L. ^{[2
]}

Freeman, R. R. ^{[2
]}

Akli, K. U. ^{[3
]}

Giraldez, E. ^{[3
]}

Stephens, R. B. ^{[3
]}

机构：

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

[2] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[3] Gen Atom Co, San Diego, CA 92186 USA

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

[5] Univ Rochester, Dept Phys, Rochester, NY 14623 USA

[6] Univ Rochester, Fus Sci Ctr Extreme States Matter & Fast Ignit Ph, Rochester, NY 14623 USA

来源：

PHYSICS OF PLASMAS | 2010年 / 17卷 / 10期

关键词：

ABSORPTION; CONTRAST; LIGHT;

D O I：

10.1063/1.3484217

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：

High-intensity, short-pulse laser-interaction experiments with small-mass, wedge-shaped-cavity Cu targets are presented. The diagnostics provided spatially and spectrally resolved measurements of the Cu K-alpha line emission at 8 keV. The conversion efficiency of short-pulse laser energy into fast electrons was inferred from the x-ray yield for wedge opening angles between 30 and 60 and for s- and p-polarized laser irradiation. Up to 36 +/- 7% conversion efficiency was measured for the narrowest wedge with p-polarization. The results are compared with predictions from two-dimensional particle-in-cell simulations. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3484217]

引用

页数：7

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