HL-2A装置YAG激光汤姆逊散射测量电子温度的初步结果  

Primary results of measuring plasma electron temperature with YAG laser Thomson scattering system on the HL-2A Tokamak

作　　者：刘春华[1] 黄渊[1] 冯震[1] 施佩兰[1] 刘祖黎[2] 

机构地区：[1]核工业西南物理研究院,成都610041 [2]华中科技大学物理系,武汉430074

出　　处：《强激光与粒子束》2008年第7期1119-1124,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10375020)

摘　　要：叙述了激光汤姆逊散射的实验原理,介绍了HL-2A装置上改进后的激光汤姆逊散射系统。高脉冲功率Nd:YAG激光光源发出的1064 nm的激光能很好地满足测量等离子体电子散射光的要求,硅雪崩光电二极管和窄带干涉滤波片组成的多色仪的使用,大大提高了散射光的测量效率。数据处理方法采用按测量误差进行权重分析的查表法,提高了数据处理的速度。最后介绍了各种放电条件下的单空间点电子温度的测量结果。This article describes the laser Thomson scattering principle and the developed system on HL-2A device. The high power Q-switch Nd：YAG laser, with a wavelength of 1 064 nm, can sufficiently satisfy the measurement requirement. The polycromator consisting of avalanche photo-diodes（APD） and narrow band interference filters, can effectively improve the measurement of scattering light. The electron temperature is deduced by error-weighted lookup table method, which improves the dataprocessing speed or efficiency. Finally, the experiment results of the one-point electron temperature during different discharges of plasma are presented.

关 键 词：汤姆逊散射 硅雪崩光电二极管 窄带干涉滤波片 电子温度 

分 类 号：O463.1[机械工程—光学工程]