用激光吹气注入高Z杂质使HL-1M托卡马克放电安全终止的研究  

Potential safe termination by laser ablation of high-Z impurity in the HL-1M tokamak

作　　者：郑永真[1] 冯兴亚[1] 郑银甲[1] 郭干城[1] 徐德明[1] 邓中朝[1] 

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《物理学报》2005年第6期2809-2813,共5页Acta Physica Sinica

摘　　要：采用高Z杂质注入HL1M等离子体中,触发等离子体电流衰竭的实验已经施行.用激光吹气注入高Z杂质能够增加辐射冷却,等离子体在-3ms时间内迅速冷却而且在电流终止之前电子温度损失约80%.实验证明它是一种使得大型聚变实验装置上在放电破裂之前显著减少等离子体中热能而且安全终止放电的简单、快速和有效的途径.A preliminary experiment for triggering a Plasma current quench by means of injection of high-Z impurities has been performed on the HL-1M before the major disruption. Using injection of impurity with higher charge of the nuclei allows us to increase the radiation cooling on a 3 ms time scale and the electronic temperature loss contract is 80% before current terminates. It can be a simple and potential approach to decrease significantly the plasma thermal energy and the magnetic field energy before a disruption and to a safe plasma termination.

关 键 词：高Z杂质 HL-1M托卡马克 等离子体 激光吹气 电流衰竭 

分 类 号：TL631.24[核科学技术—核技术及应用] O532.25[理学—等离子体物理]