Experimental study of K-shell X-ray emission generated from nanowire target irradiated by relativistic laser pulses  

作　　者：田野 王文涛 王成 陆效明 王乘 冷雨欣 梁晓燕 刘建胜 李儒新 徐至展 

机构地区：[1]Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2013年第3期81-83,共3页中国光学快报（英文版）

基　　金：supported by the National Basic Research Program of China(Nos.011CB808100and2010CB923203);the National Natural Science Foundation of China(Nos.10974214and60921004);the Shanghai Science and Technology Talent Project(No.12XD1405200);the State Key Laboratory Program of Chinese Ministry of Science and Technology

摘　　要：K-shell X-ray emission from a Cu nanowire target irradiated by an ultraintense femtosecond laser pulse is studied using an elliptically bent quartz crystal and imaging plate. The designed bent crystal spectrometer has better spectral resolution, which is higher than 1000. The absolute Ka radiation photon yields are obtained from the experimental results and the Monte-Carlo model. The conversion efficiency of the Cu Ka line is estimated to be 0.019% from the interaction of 4 J, 50-fs laser pulse irradiated on a Cu nanowire target. The high vield of K shell X-ray has important applications in X-ray emission source.K-shell X-ray emission from a Cu nanowire target irradiated by an ultraintense femtosecond laser pulse is studied using an elliptically bent quartz crystal and imaging plate. The designed bent crystal spectrometer has better spectral resolution, which is higher than 1000. The absolute Ka radiation photon yields are obtained from the experimental results and the Monte-Carlo model. The conversion efficiency of the Cu Ka line is estimated to be 0.019% from the interaction of 4 J, 50-fs laser pulse irradiated on a Cu nanowire target. The high vield of K shell X-ray has important applications in X-ray emission source.

关 键 词：Electromagnetic wave emission Nanowires Quartz Ultrashort pulses X ray scattering 

分 类 号：TN24[电子电信—物理电子学] TL814[核科学技术—核技术及应用]