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.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
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)
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
Thomson scattering
Si-avalanche photo-diodes
Narrow band interference filter
Electron temperature