Magnetic-Fluctuation-Induced Particle Transport and Density Relaxation in a High-Temperature Plasma

被引：18
|
作者：
Ding, W. X. [1 ,3 ,4 ]
Brower, D. L. [1 ,3 ,4 ]
Fiksel, G. [2 ,3 ,4 ]
Den Hartog, D. J. [2 ,3 ,4 ]
Prager, S. C. [2 ,3 ,4 ]
Sarff, J. S. [2 ,3 ,4 ]
机构：
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[2] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[3] Univ Wisconsin, Ctr Magnet Self Org Astrophys, Madison, WI 53706 USA
[4] Univ Wisconsin, Lab Plasmas, Madison, WI 53706 USA
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 02期
基金：
美国国家科学基金会;
关键词：
REVERSED-FIELD PINCH; HEAT-TRANSPORT; INSTABILITIES; TOKAMAKS; TORUS;
D O I：
10.1103/PhysRevLett.103.025001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The first direct measurement of magnetic-fluctuation-induced particle flux in the core of a high-temperature plasma is reported. Transport occurs due to magnetic field fluctuations associated with global tearing instabilities. The electron particle flux, resulting from the correlated product of electron density and radial magnetic fluctuations, accounts for density profile relaxation during a magnetic reconnection event. The measured particle transport is much larger than that expected for ambipolar particle diffusion in a stochastic magnetic field.
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页数：4
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