Sharp hollow density profile with TVTS on ECRH JFT-2M plasma

被引：1

作者：

Yamauchi, T ^{[1
]}

Hoshino, K ^{[1
]}

Kawashima, H ^{[1
]}

Ogawa, T ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Tokai, Ibaraki 31911, Japan

来源：

PHYSICS LETTERS A | 1998年 / 246卷 / 06期

关键词：

TVTS; hollow electron density profile; pump-out; electron temperature profile; gradient scale length; ECRH; FW; O-mode heating;

D O I：

10.1016/S0375-9601(98)00534-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first hollow electron density profile in the central region is measured during the electron cyclotron resonance heating (ECRH) on the JFT-2M tokamak with a TV Thomson scattering system. The density of the peripheral region is not hollow but is accumulated by the pump out from the central region and the gas puffing from outside. The hollowness increases with time but is saturated at similar to 40 ms and maintains the constant hollow ratio in spite of a slight decrease of temperature. The hollowness is strongly connected with the steep temperature gradient of the heated zone. (C) 1998 Elsevier Science B.V.

引用

页码：534 / 541

页数：8

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