Opacity and gradients in aluminum wire array z-pinch implosions on the Z pulsed power facility

被引：22

作者：

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

Hansen, S. B. ^{[1
]}

Jennings, C. A. ^{[1
]}

Jones, B. ^{[1
]}

Coverdale, C. A. ^{[1
]}

Harvey-Thompson, A. J. ^{[1
]}

Rochau, G. A. ^{[1
]}

Dunham, G. ^{[1
]}

Moore, N. W. ^{[1
]}

Harding, E. C. ^{[1
]}

Cuneo, M. E. ^{[1
]}

Chong, Y. -K. ^{[2
]}

Clark, R. W. ^{[2
]}

Ouart, N. ^{[2
]}

Thornhill, J. W. ^{[2
]}

Giuliani, J. ^{[2
]}

Apruzese, J. P. ^{[2
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

[2] Naval Res Lab, Washington, DC 20375 USA

来源：

PHYSICS OF PLASMAS | 2014年 / 21卷 / 03期

关键词：

PLASMAS; TRANSPORT; ARGON;

D O I：

10.1063/1.4865224

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：

Aluminum wire array z pinches imploded on the Z generator are an extremely bright source of 1-2 keV radiation, with close to 400 kJ radiated at photon energies >1 keV and more than 50 kJ radiated in a single line (Al Ly-alpha). Opacity plays a critical role in the dynamics and K-shell radiation efficiency of these pinches. Where significant structure is present in the stagnated pinch this acts to reduce the effective opacity of the system as demonstrated by direct analysis of spectra. Analysis of time-integrated broadband spectra (0.8-25 keV) indicates electron temperatures ranging from a few 100eV to a few keV are present, indicative of substantial temperature gradients. (C) 2014 AIP Publishing LLC.

引用

页数：8

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