Online plasma diagnostics of a laser-produced plasma

作     者：高凯 Nasr A M HAFZ 李松 Mohammad MIRZAIE 李光宇 Quratul AIN Kai GAO Nasr A M HAFZ Song LI Mohammad MIRZAIE Guangyu LI Quratul AIN

作者机构：Key Laboratory for Laser and Plasmas (MOE) and Department of Physics and Astronomy Shanghai JiaoTong University Shanghai 200240 People's Republic of China Collaborative Innovation Center of IFSA Shanghai Jiao Tong University Shanghai 200240 People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2017年第19卷第1期

页      面：85-89页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070204[理学-等离子体物理] 0702[理学-物理学] 

主　　题：plasma diagnostics probe beam interferometry abel inversion 

摘      要：In this study,we report a laser interferometry experiment for the online-diagnosing of a laserproduced *** laser pulses generating the plasma are ultra-fast（30 femtoseconds）,ultraintense（tens of Terawatt） and are focused on a helium gas jet to generate relativistic electron beams via the laser wakefield acceleration（LWFA） mechanism.A probe laser beam（λ=800 nm） which is split-off the main beam is used to cross the plasma at the time of arrival of the main pulse,allowing online plasma density *** interferometer setup is based on the No Marski method in which we used a Fresnel bi-prism where the probe beam interferes with itself after crossing the plasma medium.A high-dynamic range CCD camera is used to record the interference *** upon the Abel inversion technique,we obtained a 3D density distribution of the plasma density.