MEASUREMENT OF NONLINEAR MODE-COUPLING OF TEARING FLUCTUATIONS

被引：43

作者：

ASSADI, S

PRAGER, SC

SIDIKMAN, KL

机构：

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.69.281

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Three-wave nonlinear coupling of spatial Fourier modes is measured in the MST reversed field pinch by applying bispectral analysis to magnetic fluctuations measured at the plasma edge at 64 toroidal locations and 16 poloidal locations, permitting observation of coupling over 8 poloidal modes and 32 toroidal modes. Comparison to bispectra predicted by resistive MHD computation indicates reasonably good agreement. However, during the crash phase of the sawtooth oscillation the nonlinear coupling is strongly enhanced, concomitant with a broadened (presumably nonlinearly generated) k spectrum.

引用

页码：281 / 284

页数：4

共 15 条

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