Disruption mitigation using laser ablation of high-Z impurities in HL-1M tokamak  

作　　者：郑永真 冯兴亚 郭干城 徐德明 郑银甲 

机构地区：[1]Southwestern Institute of Physics, Chengdu 610041,China

出　　处：《Chinese Physics B》2006年第9期2053-2057,共5页中国物理B（英文版）

基　　金：Project supported by IAEA International Science Foundation （Grant No IS 105123）.

摘　　要：A preliminary experiment triggering a plasma current quench by laser ablation of high-Z impurities has been performed in the HL-1M tokamak. The injection of impurities with higher electric charges into tokamak plasmas can increase the radiation cooling of the plasma. Resistive, highly radiating plasma formed prior to the thermal quench can dissipate both the thermal and magnetic energies, which is possibly a simple and potential approach to reducing significantly the plasma thermal energy and magnetic energy before a disruption thereby a safe plasma termination is obtained.A preliminary experiment triggering a plasma current quench by laser ablation of high-Z impurities has been performed in the HL-1M tokamak. The injection of impurities with higher electric charges into tokamak plasmas can increase the radiation cooling of the plasma. Resistive, highly radiating plasma formed prior to the thermal quench can dissipate both the thermal and magnetic energies, which is possibly a simple and potential approach to reducing significantly the plasma thermal energy and magnetic energy before a disruption thereby a safe plasma termination is obtained.

关 键 词：high-Z impurities DISRUPTION safe plasma termination laser ablation 

分 类 号：O53[理学—等离子体物理] TN24[理学—物理]