MODE CONVERSION AND ELECTRON DAMPING OF THE FAST ALFVEN-WAVE IN A TOKAMAK AT THE ION-ION HYBRID FREQUENCY

被引：40

作者：

FUCHS, V ^{[1
]}

RAM, AK ^{[1
]}

SCHULTZ, SD ^{[1
]}

BERS, A ^{[1
]}

LASHMOREDAVIES, CN ^{[1
]}

机构：

[1] MIT, CTR PLASMA FUS, CAMBRIDGE, MA 02139 USA

来源：

PHYSICS OF PLASMAS | 1995年 / 2卷 / 05期

关键词：

D O I：

10.1063/1.871312

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：

Mode conversion of the fast Alfvén wave (FAW) at the ion-hybrid frequency in the ion cyclotron range of frequencies (ICRF) is studied in the presence of ion cyclotron absorption and direct electron damping in a tokamak plasma. The usual Budden model is extended to include the effect of electron damping and of the high-field-side cutoff, and is solved analytically and numerically. The mode-conversion efficiency is given as a function of the Budden transmission coefficient and of a phase integral, which describes interference between the incoming and outgoing waves. In incidence from the low-field side, a discrete spectrum of phases exists for which complete absorption (i.e., combined mode conversion and direct electron damping) of the FAW for a single transit of the resonance region can be achieved. This permits efficient electron heating and/or current drive via mode conversion of FAWs. © 1995 American Institute of Physics.

引用

页码：1637 / 1647

页数：11

共 24 条

[11] USE OF A SIMPLIFIED MODE-CONVERSION EQUATION TO INVESTIGATE THE EFFECTS OF HIGH-TEMPERATURE FUSION PRODUCTS ON ION-CYCLOTRON RESONANCE HEATING [J].