PRODUCTION AND CHARACTERIZATION OF LARGE PLASMAS FROM GAS BAG TARGETS ON NOVA

被引：33

作者：

KALANTAR, DH ^{[1
]}

KLEM, DE

MACGOWAN, BJ

MOODY, JD

MONTGOMERY, DS

MUNRO, DH

SHEPARD, TD

STONE, GF

FAILOR, BH

HSING, WW

机构：

[1] LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA

[2] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

[3] PHYS INT CO, SAN LEANDRO, CA 94577 USA

来源：

PHYSICS OF PLASMAS | 1995年 / 2卷 / 08期

关键词：

ELECTRON DENSITY; ELECTRON TEMPERATURE; ICF DEVICES; LASER FUSION REACTORS; LASER−PRODUCED PLASMA; LASER−RADIATION HEATING; NOVA FACILITY; PLASMA PRODUCTION;

D O I：

10.1063/1.871148

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：

Large plasmas are created by illuminating gas-filled thin-walled balloon-like targets using the Nova laser [E. Campbell et al., Rev. Sci. Instrum. 57, 2101 (1986)]. The targets consist of a 5000-6000 Angstrom skin surrounding 1 atm of neopentane, which, when ionized, becomes a plasma with an electron density of 10(21) electrons/cm(3). X-ray images of the gas bag target are used to evaluate the size and uniformity of the plasma by comparison with LASNEX [R. M. More, J. Quant. Spectrosc. Radiat. Transfer 27, 345 (1982)] simulations. The gas bags are heated with converging and diverging beam spots. The most uniform plasmas are created by illuminating the target with large converging beam spots that overlap to cover most of the surface of the gas bag. The gas bag plasma is heated to a peak temperature of approximately 3.5 keV, with 25 kJ of 3 omega laser light in a 1 ns square pulse. (C) 1995 American Institute of Physics.

引用

页码：3161 / 3168

页数：8

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