Thermo-diffusion in inertially confined plasmas

被引：69
|
作者：
Kagan, Grigory [1 ]
Tang, Xian-Zhu [1 ]
机构：
[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
来源：
PHYSICS LETTERS A | 2014年 / 378卷 / 21期
关键词：
23;
D O I：
10.1016/j.physleta.2014.04.005
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In a plasma of multiple ion species, thermodynamic forces such as pressure and temperature gradients can drive ion species separation via inter-species diffusion. Unlike its neutral mix counterpart, plasma thermo-diffusion is found comparable to, or even much larger than, baro-diffusion. It is shown that such a strong effect is due to the long-range nature of the Coulomb potential, as opposed to short-range interactions in neutral gases. A special composition of the tritium and He-3 fuel is identified to have vanishing net diffusion during adiabatic compression, and hence provides an experimental test in which yield degradation is minimized during ICF implosions. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：1531 / 1535
页数：5
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