CURRENT-DENSITY PROFILE AND ELECTRON-BEAM LOCALIZATION MEASUREMENTS USING CARBON PELLETS ON T-10

被引：18

作者：

EGOROV, SM ^{[1
]}

KUTEEV, BV ^{[1
]}

MIROSHNIKOV, IV ^{[1
]}

MIKHAILENKO, AA ^{[1
]}

SERGEEV, VY ^{[1
]}

USHAKOV, SN ^{[1
]}

BAGDASAROV, AA ^{[1
]}

CHISTYAKOV, VV ^{[1
]}

ELIZAVETIN, DY ^{[1
]}

VASIN, NL ^{[1
]}

机构：

[1] IV KURCHATOV ATOM ENERGY INST,MOSCOW,USSR

来源：

NUCLEAR FUSION | 1992年 / 32卷 / 11期

关键词：

D O I：

10.1088/0029-5515/32/11/I14

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：

The letter presents experimental evidence and an analysis of two phenomena arising during carbon pellet ablation - a toroidal trajectory deflection and enhanced localized ablation in the electron cyclotron resonance (ECR) current drive regime. A model developed for describing the toroidal deflection of a carbon pellet in a tokamak shows that the trajectory curvature is sensitive to the current density. Photography of the pellet trajectory is used as a diagnostic for the determination of the local current density in an ohmically heated plasma. Directly measured current profiles using pellets are in reasonable agreement with that obtained using the Spitzer conductivity, and current density fluctuations have been observed that are probably associated with magnetic islands. It is shown that in the ECR current drive regime on T-10, energetic electrons probably stimulated by the microwave power are located in a narrow zone (2 cm thickness in the radial direction) with sharp boundaries.

引用

页码：2025 / 2028

页数：4

共 28 条

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[28] Measurements of the Radial Distributions of the Geodesic Acoustic Mode and Quasi-Coherent Mode Using a Heavy Ion Beam Probe in the T-10 Tokamak Ohmic Plasma
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