APPLICATION OF DIFFUSION-THEORY TO NEUTRAL ATOM TRANSPORT IN FUSION PLASMAS

被引：8

作者：

HASAN, MZ ^{[1
]}

CONN, RW ^{[1
]}

POMRANING, GC ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES,CTR PLASMA PHYS & FUS ENGN,LOS ANGELES,CA 90024

来源：

NUCLEAR FUSION | 1987年 / 27卷 / 01期

关键词：

DIFFUSION; -; Theory; PHYSICS; Atomic;

D O I：

10.1088/0029-5515/27/1/010

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：

It is found that the energy dependent diffusion theory provides excellent accuracy in the modeling of transport of neutral atoms in fusion plasmas. Two reasons in particular explain the good accuracy. First, while the plasma is optically thick for low energy neturals, it is optically thin for high energy neutrals and the diffusion theory with Marshak boundary conditions gives accurate results for an optically thin medium, even for small values of c, the ratio of the scattering cross-section to the total cross-section. Second, the effective value of c at low energy is very close to 1 because of the downscattering via collisions of high energy neturals.

引用

页码：117 / 127

页数：11

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