Observation of velocity-independent electron transport in the reversed field pinch

被引：33

作者：

O'Connell, R

Hartog, DJD

Forest, CB

Anderson, JK

Biewer, TM

Chapman, BE

Craig, D

Fiksel, G

Prager, SC

Sarff, JS

Terry, SD

Harvey, RW

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] CompX, San Diego, CA USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.91.045002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Confinement of runaway electrons has been observed for the first time in a reversed field pinch during improved-confinement plasmas in the Madison Symmetric Torus. Energy-resolved hard-x-ray flux measurements have been used to determine the velocity dependence of the electron diffusion coefficient, utilizing computational solutions of the Fokker-Planck transport equation. With improved-confinement, the fast electron diffusivity drops by 2 orders of magnitude and is independent of velocity. This suggests a change in the transport mechanism away from stochastic magnetic field diffusion.

引用

页数：4

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