激励类氖氩软X射线激光的最佳放电电流波形  

Optimum discharge current waveforms for pumping Ne-like Ar soft X-ray laser

作　　者：赵永蓬[1] 姜杉[1] 谢耀[1] 滕树鹏[1] 王骐[1] 

机构地区：[1]哈尔滨工业大学可调谐激光技术国家级重点实验室,哈尔滨150080

出　　处：《强激光与粒子束》2011年第7期1771-1774,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61078034;60608007)

摘　　要：为了提高毛细管放电类氖氩46.9 nm软X射线激光的强度,研究了主脉冲电流波形对等离子体Z箍缩过程、激光的产生时间及激光强度的影响。通过改变主开关导通电感,实现了对主脉冲电流上升沿的改变。随着电流上升沿的增加,激光尖峰幅值减小,激光产生时间增加。实验进一步研究了平均电流变化率对激光强度的影响:在毛细管内径3 mm、管内初始气压30 Pa的情况下,产生46.9 nm激光的最佳平均电流变化率约为7.0×1011A/s。In order to enhance intensity of Ne-like Ar 46.9 nm soft X-ray laser pumped by capillary discharge,influences of main current waveform on Z-pinch process,time of lasing onset and laser intensity were studied.Rise-time of main current waveform was changed by varying conducting inductance of main switch.Experimental results with different rise-times show that amplitude of laser spike decreases with increasing rise-time,and time of lasing onset increases with increasing rise-time.In addition,influences of average current changing rate on laser intensity were studied.When inner diameter of capillary is 3 mm and initial pressure is 30 Pa,optimum average current changing rate is about 7.0×1011 A/s.

关 键 词：毛细管放电 类氖氩 软X射线激光 电流波形 

分 类 号：TN248.6[电子电信—物理电子学]