Experimental characterization of railgun-driven supersonic plasma jets motivated by high energy density physics applications

被引：44

作者：

Hsu, S. C. ^{[1
]}

Merritt, E. C. ^{[1
,2
]}

Moser, A. L. ^{[1
]}

Awe, T. J. ^{[1
]}

Brockington, S. J. E. ^{[3
]}

Davis, J. S. ^{[1
]}

Adams, C. S. ^{[1
,2
]}

Case, A. ^{[3
]}

Cassibry, J. T. ^{[4
]}

Dunn, J. P. ^{[1
]}

Gilmore, M. A. ^{[2
]}

Lynn, A. G. ^{[2
]}

Messer, S. J. ^{[3
]}

Witherspoon, F. D. ^{[3
]}

机构：

[1] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA

[2] Univ New Mexico, Albuquerque, NM 87131 USA

[3] HyperV Technol Corp, Chantilly, VA 20151 USA

[4] Univ Alabama, Prop Res Ctr, Huntsville, AL 35899 USA

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 12期

关键词：

PARAMETER SPACE;

D O I：

10.1063/1.4773320

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：

We report experimental results on the parameters, structure, and evolution of high-Mach-number (M) argon plasma jets formed and launched by a pulsed-power-driven railgun. The nominal initial average jet parameters in the data set analyzed are density approximate to 2 x 10(16) cm(-3), electron temperature approximate to 1.4 eV, velocity approximate to 30 km/s; M approximate to 14, ionization fraction approximate to 0.96, diameter approximate to 5 cm, and length approximate to 20 cm. These values approach the range needed by the Plasma Liner Experiment, which is designed to use merging plasma jets to form imploding spherical plasma liners that can reach peak pressures of 0.1-1 Mbar at stagnation. As these jets propagate a distance of approximately 40 cm, the average density drops by one order of magnitude, which is at the very low end of the 8-160 times drop predicted by ideal hydrodynamic theory of a constant-M jet. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4773320]

引用

页数：13

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