Development of Compton radiography of inertial confinement fusion implosions

被引：87

作者：

Tommasini, R. ^{[1
]}

Hatchett, S. P. ^{[1
]}

Hey, D. S. ^{[1
]}

Iglesias, C. ^{[1
]}

Izumi, N. ^{[1
]}

Koch, J. A. ^{[1
]}

Landen, O. L. ^{[1
]}

MacKinnon, A. J. ^{[1
]}

Sorce, C. ^{[1
]}

Delettrez, J. A. ^{[2
]}

Glebov, V. Yu. ^{[2
]}

Sangster, T. C. ^{[2
]}

Stoeckl, C. ^{[2
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

来源：

PHYSICS OF PLASMAS | 2011年 / 18卷 / 05期

关键词：

IGNITION;

D O I：

10.1063/1.3567499

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：

An important diagnostic tool for inertial confinement fusion will be time-resolved radiographic imaging of the dense cold fuel surrounding the hot spot. The measurement technique is based on point-projection radiography at photon energies from 60 to 200 keV where the Compton effect is the dominant contributor to the opacity of the fuel or pusher. We have successfully applied this novel Compton radiography technique to the study of the final compression of directly driven plastic capsules at the OMEGA facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. The radiographs have a spatial and temporal resolution of similar to 10 mu m and similar to 10 ps, respectively. A statistical accuracy of similar to 0.5% in transmission per resolution element is achieved, allowing localized measurements of areal mass densities to 7% accuracy. The experimental results show 3D nonuniformities and lower than 1D expected areal densities attributed to drive asymmetries and hydroinstabilities. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567499]

引用

页数：7

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