Yield and emission line ratios from ICF target implosions with multi-mode Rayleigh-Taylor perturbations

被引:6
作者
Langer, SH [1 ]
Scott, HA [1 ]
Keane, CJ [1 ]
Landen, OL [1 ]
Marinak, MM [1 ]
机构
[1] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
关键词
D O I
10.1016/S0022-4073(97)00077-0
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Mix due to hydrodynamic instabilities reduces the yield in inertial confinement fusion implosions. Line emission from dopants placed in the capsule can be used to diagnose the extent of the instabilities. This paper compares line emission measured in experiments performed on the Nova laser to 1D mix models and 2D models in which many different instability wavelengths interact. The 2D models properly handle the distorted interface between the fuel and the capsule shell, instead of assuming a region where fuel and shell material are atomically mixed as in the 1D models. Both models agree reasonably well with the dependence of thermonuclear yield on capsule roughness. The 2D models do a better job of matching the line emission for capsules with rough surfaces. (C) 1997 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:709 / 720
页数:12
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