摘要
A state diagnosis of laser-produced plasma in air generated by a 1064 nm pulse laser was investigated by the Thomson scattering(TS)method.The evolutions of the electron temperature and electron density were obtained as a function of the time delay which ranged from 300-3200 ns.The heating effect produced by the 532 nm probe beam with different energies on the air plasma at different interaction times was further studied using a time-resolved optical emission spectroscopy technique.The influence of the probe beam on the electron density was found to be negligible,whereas its influence on electron temperature is evident.In addition,the heating effect of the probe beam on the plasma strongly depends on the energy of the probe beam,and gradually weakens with increasing time delay.Our results are helpful for further understanding the TS method and its application in plasma diagnostics.
作者
Pengpeng MA
Maogen SU
Shiquan CAO
Kaiping WANG
Weiwei HAN
Duixiong SUN
Qi MIN
Chenzhong DONG
麻鹏鹏;苏茂根;曹世权;王凯平;韩伟伟;孙对兄;敏琦;董晨钟(Key Laboratory of Atomic and Molecular Physics&Functional Material of Gansu Province,College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070;People's Republic of China Joint Laboratory of Atomic and Molecular Physics,Northwest Normal University and Institute of Modern Physics of Chinese Academy of Sciences,Lanzhou 730070;People's Republic of China 2 Joi)
基金
This work is supported by the National Key Research and Development Program of China(No.2017YFA0402300)
National Natural Science Foundation of China(Nos.11874051,11564037,61741513,11904293)
the Special Fund Project for Guiding Scientific and Technological Inno-vation of Gansu Province(No.2019zx-10).
