Alfven frequency modes at the edge of TFTR plasmas

被引：41

作者：

Chang, Z

Fredrickson, ED

Zweben, SJ

Park, HK

Nazikian, R

Mazzucato, E

Batha, SH

Bell, MG

Budny, RV

Bush, CE

Darrow, DS

Ernst, D

Fu, GY

Hawryluk, RJ

Hill, KW

Hosea, JC

Janos, AC

Jassby, DL

Johnson, DW

Johnson, LC

Levinton, FM

Mansfield, DK

McGuire, KM

Mikkelsen, DR

Mueller, D

Owens, DK

Ramsey, AT

Sabbagh, SA

Synakowski, EJ

Takahashi, H

Taylor, G

Thompson, ME

Wieland, RM

Wong, KL

Zarnstorff, MC

机构：

[1] FUS PHYS & TECHNOL,TORRANCE,CA

[2] COLUMBIA UNIV,NEW YORK,NY 10027

[3] MIT,CAMBRIDGE,MA 02139

来源：

NUCLEAR FUSION | 1995年 / 35卷 / 12期

关键词：

D O I：

10.1088/0029-5515/35/12/I07

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：

An Alfven frequency mode (AFM) is very often seen in TFTR neutral beam heated plasmas as well as in ohmic plasmas. This quasi-coherent mode has so far only been seen on magnetic fluctuation diagnostics (Mirnov coils). A close correlation between the plasma edge density and the mode activity (frequency and amplitude) has been observed, which indicates that the AFM is an edge localized mode with r/a > 0.85. No direct impact of this mode on the plasma global performance or on fast ion loss (e.g., the alpha particles in DT experiments) has been observed. This mode is not the conventional TAE (toroidicity induced Alfven eigenmode). The present TAE theory cannot explain this observation. Other possible explanations are discussed.

引用

页码：1469 / 1479

页数：11

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