Gamma-ray imaging of inertial confinement fusion implosions reveals remaining ablator carbon distribution

被引：6
|
作者：
Geppert-Kleinrath, V. [1 ]
Hoffman, N. [1 ]
Birge, N. [1 ]
DeYoung, A. [1 ]
Fittinghoff, D. [2 ]
Freeman, M. [1 ]
Geppert-Kleinrath, H. [1 ]
Kim, Y. [1 ]
Meaney, K. [1 ]
Morgan, G. [1 ]
Rubery, M. [2 ]
Tafoya, L. [1 ]
Wilde, C. [1 ]
Volegov, P. [1 ]
机构：
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[2] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
来源：
PHYSICS OF PLASMAS | 2023年 / 30卷 / 02期
关键词：
AREAL DENSITY; PHYSICS BASIS; IGNITION; RECONSTRUCTION; NEUTRON;
D O I：
10.1063/5.0122938
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：
The joint LANL/LLNL nuclear imaging team has acquired the first gamma-ray images of inertial confinement fusion implosions at the National Ignition Facility. The gamma-ray image provides crucial information to help characterize the inertially confined fuel and ablator assembly at stagnation, information that would be difficult to acquire from neutron or x-ray observations. Gamma imaging visualizes both gamma radiation emitted directly in deuterium-tritium (DT) fusion reactions as well as gamma rays produced when DT fusion neutrons scatter inelastically on carbon nuclei in the remaining ablator of the fuel capsule. The resulting image provides valuable information on the position and density of the remaining ablator and potential contamination of the hot spot-a powerful diagnostic window into the capsule assembly during burn.
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页数：9
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