HT-7上氘等离子体放电时中子注量的测量与分析  

Neutron flux measurement and analysis in the HT-7 deuterium plasma

作　　者：钟国强[1] 胡立群[1] 朱玉宝[1] 林士耀[1] 陈珏铨[1] 许平[1] 段艳敏[1] 卢洪伟[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《物理学报》2009年第5期3262-3267,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10305013)资助的课题~~

摘　　要：利用三氟化硼(BF3)和氦三(3He)正比计数管组成的快速时间分辨中子注量探测系统,对HT-7超导托卡马克上氘等离子体放电时光中子和聚变中子的产生机理进行研究.结合γ射线、硬X射线等相关诊断的实验结果,分析了纯欧姆放电和低杂波辅助加热放电时,中子注量信号随时间演化的典型特征.结果表明:HT-7在投入大功率低杂波辅助加热等离子体放电时,能够产生数量可观的氘-氘(D-D)聚变中子.Fusion neutron and photon neutron producing behavior in the deuterium plasma discharge have been studied on HT-7 superconductive tokamak device by BF3 and ^3 He proportional ionization chamber implementing the fast time respond neutron flux measurement system. Typical time resolved neutron flux signals have been analyzed in connection with gamma and hard X-ray diagnostic data in the cases of ohmic discharge and lower hybrid wave discharge. Data analysis show that many neutrons are produced by D-D fusion reaction when high-power lower hybrid wave was employed to heat the plasma.

关 键 词：中子注量 聚变中子 光中子 托卡马克 

分 类 号：TL631.24[核科学技术—核技术及应用] TL411.4