IMPROVED CONFINEMENT AND EDGE PLASMA FLUCTUATIONS IN THE STOR-M TOKAMAK

被引：27

作者：

ZHANG, W ^{[1
]}

XIAO, C ^{[1
]}

CONWAY, GD ^{[1
]}

MITARAI, O ^{[1
]}

SARKISSIAN, A ^{[1
]}

SKARSGARD, HM ^{[1
]}

ZHANG, L ^{[1
]}

HIROSE, A ^{[1
]}

机构：

[1] KUMAMOTO INST TECHNOL,IKEDA,JAPAN

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1992年 / 4卷 / 10期

关键词：

D O I：

10.1063/1.860383

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 improved Ohmic confinement phase has been observed in the STOR-M tokamak [Plasma Physics and Controlled Nuclear Fusion Research, 1988 (International Atomic Energy Agency, Vienna, 1989), Vol. 1, p. 323] after application of a turbulent heating (TH) pulse. This improved Ohmic confinement phase is characterized by (a) increased n(e)BAR (b) reduced H(alpha) radiation from the edge, (c) reduced density and magnetic fluctuations at the edge, (d) a steeper density profile at the edge, and (e) a more negative radial electric field. Almost complete suppression of sawtooth oscillations during the improved confinement phase has also been observed. A linear dispersion relation describes the density and magnetic fluctuations in the frequency range up to 3 50 kHz. In the region r < a (r > a) the propagation direction of the density fluctuations is in the electron (ion) diamagnetic direction. The reduction of rms density and magnetic fluctuations after the TH pulse is largely due to suppression of relatively high frequency (less-than-or-equal-to 500 kHz) components. The density fluctuations (n/n(e)) in the scrape-off layer remain intact after the pulse.

引用

页码：3277 / 3284

页数：8

共 22 条

[1]

AKATOVA TY, 1991, PLASMA PHYS CONTROLL, V1, P509

[2] QUASI-LINEAR TRANSPORT INFERRED FROM DENSITY FLUCTUATION SPECTRA [J].