GLOBAL MODES AND HIGH-ENERGY PARTICLES IN IGNITED PLASMAS

被引：51

作者：

COPPI, B ^{[1
]}

MIGLIUOLO, S ^{[1
]}

PEGORARO, F ^{[1
]}

PORCELLI, F ^{[1
]}

机构：

[1] JET JOINT UNDERTAKING,ABINGDON OX14 3EA,OXON,ENGLAND

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1990年 / 2卷 / 05期

关键词：

D O I：

10.1063/1.859240

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Fusion-produced alpha particles may spontaneously enhance the stability of an ignited plasma against m = 1 internal modes. Stable values of the poloidal beta of the thermal plasma component significantly in excess of the ideal magnetohydrodynamic threshold can be attained, provided the region where the magnetic helical parameter q is below unity is not too wide and the ignition temperature is not too high. A comprehensive analysis of the different instability regimes is presented, with special attention to so-called "fishbone oscillations" and their influence on the ignition energy balance. The theoretical predictions compare favorably with sawtooth suppression experiments in the JET tokamak [Phys. Rev. Lett. 60, 2148 (1988)] with high-power, ion-cyclotron resonant frequency heating, where energetic ions in the MeV range are produced. © 1990 American Institute of Physics.

引用

页码：927 / 943

页数：17