Most electron heat transport is not anomalous; It is a paleoclassical process in toroidal plasmas

被引:14
作者
Callen, JD [1 ]
机构
[1] Univ Wisconsin, Madison, WI 53706 USA
关键词
D O I
10.1103/PhysRevLett.94.055002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
It is hypothesized that radial electron heat transport in magnetically confined toroidal plasmas results from paleoclassical Coulomb collision processes ( parallel electron heat conduction and magnetic field diffusion). In such plasmas the electron temperature is equilibrated along magnetic field lines a long length L (much greater than poloidal periodicity length piR(0)q), which is the minimum of the electron collision length and an effective field line length. Thus, diffusing field lines induce a radial electron heat diffusivity M equivalent to L/(piR(0)q) similar to 10 much greater than 1 times the magnetic field diffusivity eta/mu(0) similar or equal to v(e) (c/omega(p))(2).
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