激光诱导镍等离子体电子温度的时间演化特性  

Investigation on the Time Evolution of the Electron Temperature in Laser-induced Ni Plasma

作　　者：傅院霞[1] 徐丽[1] 葛立新[1] 徐卫青[1] 谭仁雨 王莉[1] FU Yuan-xia XU Li GE Li-xin XU Wei-qing TAN Ren-yu WANG Li XU Yong-hong CHENG Rong-long(School of Mathematics and Physics, Bengbu University, Bengbu ,233030, Anhu)

机构地区：[1]蚌埠学院理学院,安徽蚌埠233030

出　　处：《蚌埠学院学报》2016年第5期30-32,37,共4页Journal of Bengbu University

基　　金：专业结构调整服务地方发展计划(2013ZYTZ077);蚌埠学院大学物理团队项目(2013JYXM05);蚌埠学院科研项目(2015ZR17)

摘　　要：实验在0-900 nm的范围内测得激光诱导Ni等离子体的时间分辨发射光谱,通过对能量、延迟、门宽3个因素的优化来达到最佳的时间分辨光谱,由发射光谱线的强度计算等离子体的电子温度,并由实验结果讨论了激光诱导等离子体中电子温度的时间演化特性。实验结果表明,实验的最佳优化参数分别是将激光与ICCD之间的延迟设置为682 ns,光谱仪曝光的延迟时间设置为150 ns,积分门宽时间设置为200 ns;当延时在60-200 ns范围内变化时,相应的电子温度范围为6500-10000 K,且150 ns左右温度达到最大值。The time resolved emission spectrum of Ni in laser induced Ni plasma were measured in the wavelength region from 0-900 nm,the best time resolved emission spectrum were measured by adjusting the laser energy,ICCD delay,gate width. The electron temperature of plasma was calculated from the measured intensity of emission spectral line respectively,and the electron temporal evolution properties of the electron temperature were finally discussed according to the experimental results. It showed from the measured results that the maximum optimization parameter setting is the delay between the laser and the ICCD is set to 682 ns,the delay time of the spectrometer exposure is set to 150 ns,the integration time is set to 200 ns. And the electron temperature is varied from 6500-10000 K when the delay in the range from60-200 ns,and the maximum is reached when the temperature reaches 150 ns.

关 键 词：激光诱导Ni等离子体 激光诱导击穿光谱技术 发射光谱 时间分辨谱 电子温度 

分 类 号：O53[理学—等离子体物理]