CURRENT-DENSITY FLUCTUATIONS AND AMBIPOLARITY OF TRANSPORT

被引：15

作者：

SHEN, W

DEXTER, RN

PRAGER, SC

机构：

[1] University of Wisconsin-Madison, Madison

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.68.1319

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The fluctuation in the plasma current density is measured in the MST reversed-field-pinch experiment. Such fluctuations, and the measured radial profile of the k spectrum of magnetic fluctuations, support the view that low-frequency fluctuations (f < 30 kHz) are tearing modes and high-frequency fluctuations (30 kHz < f < 250 kHz) are localized turbulence in resonance with the local equilibrium magnetic field (i.e., k.B = 0). Correlation of current-density and magnetic fluctuations ([j(parallel-to)B(r)]) demonstrates that radial particle transport from particle motion parallel to a fluctuating magnetic field is ambipolar over the full frequency range.

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页码：1319 / 1322

页数：4

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