Sub-picosecond chirped laser pulse-induced airflow and water condensation in a cloud chamber  

作　　者：Haiyi Sun Yonghong Liu Jiansheng Liu Jingjing Ju Cheng Wang Xingkai Hu Zhongbin Zhu Yaoxiang Liu Tiejun Wang See Leang Chin Ruxin Li Zhizhan Xu 孙海轶;刘永宏;刘建胜;鞠晶晶;王成;胡兴凯;朱忠彬;刘尧香;王铁军;See Leang Chin;李儒新;徐至展(State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences;MOE Key Laboratory of Advanced Micro-structured Materials, Institute of Precision Optical Engineering,School of Physics Science and Engineering, Tongji University;IFSA Collaborative Innovation Center, Shanghai Jiao Tong University;Center for Optics, Photonics and Laser (COPL), Laval University)

机构地区：[1]State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China [2]MOE Key Laboratory of Advanced Micro-structured Materials, Institute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China [3]IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China [4]Center for Optics, Photonics and Laser （COPL）, Lava1 University, Quebec City, Quebec G1V OA6, Canada

出　　处：《Chinese Optics Letters》2018年第6期59-63,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11425418,61475167,11404354,and 61221064);the State Key Laboratory Program of the Chinese Ministry of Science and Technology

摘　　要：Sub-picosecond chirped laser pulse-induced airflow and water condensation were investigated in a cloud chamber.The results indicate that the positively chirped sub-picosecond laser pulses generate a more uniform intensity distribution inside the plasma column, leading to a weaker airflow and an elliptic-shaped snow pile. The negatively chirped sub-picosecond laser pulses generate a spark-like intensity distribution inside the plasma column, which produces a wider range of airflow and a round snow pile. The amount of snow weight and the concentration of NO3-- are found to be dependent on the intensity distribution inside the plasma column. The visibly stronger plasma column generates much more snow and a higher concentration of NO3--. These experimental results provide a reference for sub-picosecond laser-induced water condensation in realistic atmospheric conditions.Sub-picosecond chirped laser pulse-induced airflow and water condensation were investigated in a cloud chamber.The results indicate that the positively chirped sub-picosecond laser pulses generate a more uniform intensity distribution inside the plasma column, leading to a weaker airflow and an elliptic-shaped snow pile. The negatively chirped sub-picosecond laser pulses generate a spark-like intensity distribution inside the plasma column, which produces a wider range of airflow and a round snow pile. The amount of snow weight and the concentration of NO3-- are found to be dependent on the intensity distribution inside the plasma column. The visibly stronger plasma column generates much more snow and a higher concentration of NO3--. These experimental results provide a reference for sub-picosecond laser-induced water condensation in realistic atmospheric conditions.

关 键 词：Sub-picosecond chirped laser pulse-induced airflow and water condensation in a cloud chamber 

分 类 号：P426[天文地球—大气科学及气象学]