Measurement of the shell decompression in direct-drive inertial-confinement-fusion implosions

被引：19
|
作者：
Michel, D. T. [1 ]
Hu, S. X. [1 ]
Davis, A. K. [1 ]
Glebov, V. Yu. [1 ]
Goncharov, V. N. [1 ]
Igumenshchev, I. V. [1 ]
Radha, P. B. [1 ]
Stoeckl, C. [1 ]
Froula, D. H. [1 ]
机构：
[1] Univ Rochester, Lab Laser Energet, Rochester, NY 14636 USA
来源：
PHYSICAL REVIEW E | 2017年 / 95卷 / 05期
关键词：
RAYLEIGH-TAYLOR GROWTH; PLANAR TARGETS; LASER; HYDRODYNAMICS; PERFORMANCE; DISPERSION; LIGHT;
D O I：
10.1103/PhysRevE.95.051202
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：
A series of direct-drive implosions performed on OMEGA were used to isolate the effect of an adiabat on the in-flight shell thickness. The maximum in-flight shell thickness was measured to decrease from 75 +/- 2 to 60 +/- 2 mu m when the adiabat of the shell was reduced from 6 to 4.5, but when decreasing the adiabat further (1.8), the shell thickness increased to 75 +/- 2 mu m due to the growth of the Rayleigh-Taylor instability. Hydrodynamic simulations suggest that a laser imprint is the dominant seed for these nonuniformities.
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页数：5
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