共 37 条
Multi-keV x-ray sources from metal-lined cylindrical hohlraums
被引:13
作者:

Jacquet, L.
论文数: 0 引用数: 0
h-index: 0
机构:
CEA, DAM, DIF, F-91297 Arpajon, France CEA, DAM, DIF, F-91297 Arpajon, France

Girard, F.
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h-index: 0
机构:
CEA, DAM, DIF, F-91297 Arpajon, France CEA, DAM, DIF, F-91297 Arpajon, France

Primout, M.
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h-index: 0
机构:
CEA, DAM, DIF, F-91297 Arpajon, France CEA, DAM, DIF, F-91297 Arpajon, France

Villette, B.
论文数: 0 引用数: 0
h-index: 0
机构:
CEA, DAM, DIF, F-91297 Arpajon, France CEA, DAM, DIF, F-91297 Arpajon, France

Stemmler, Ph
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h-index: 0
机构:
CEA, DAM, DIF, F-91297 Arpajon, France CEA, DAM, DIF, F-91297 Arpajon, France
机构:
[1] CEA, DAM, DIF, F-91297 Arpajon, France
关键词:
LASER-PRODUCED PLASMAS;
CONVERSION EFFICIENCY;
NLTE EMISSIVITIES;
DRIVE FUSION;
RADIATION;
MODEL;
IONIZATION;
IMPLOSION;
TARGETS;
D O I:
10.1063/1.4746031
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:
As multi-keV x-ray sources, plastic hohlraums with inner walls coated with titanium, copper, and germanium have been fired on Omega in September 2009. For all the targets, the measured and calculated multi-keV x-ray power time histories are in a good qualitative agreement. In the same irradiation conditions, measured multi-keV x-ray conversion rates are similar to 6%-8% for titanium, similar to 2% for copper, and similar to 0.5% for germanium. For titanium and copper hohlraums, the measured conversion rates are about two times higher than those given by hydroradiative computations. Conversely, for the germanium hohlraum, a rather good agreement is found between measured and computed conversion rates. To explain these findings, multi-keV integrated emissivities calculated with RADIOM M. Busquet, Phys. Fluids 85, 4191 (1993)1, the nonlocal-thermal-equilibrium atomic physics model used in our computations, have been compared to emissivities obtained from different other models. These comparisons provide an attractive way to explain the discrepancies between experimental and calculated quantitative results. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4746031]
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