Generation of Radial Electric Field with Electrode Biasing

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2001,（2）
• 页码范围: 257-259
• 页数: 3页
• 分类号: O4
• 语种: 英文

摘要

Time and space resolved measurements of the radial electric field (Er) have been conducted during the electrode biasing experiments on the KT-5C tokamak. The suppression of the turbulent transport with the change of Er induced by the biased electrode is observed. It is found that the poloidal flow contributes to the main part of the Er, and the change of the poloidal flow has a lead of about 20μs to the formation of Er. These observations suggest that a radialcurrent, responding to an induced voltage on the electrode, drives a poloidal flow which in turn drives the radial electric field.