Numerical simulations of the wavefront distortion of inter-spacecraft laser beams caused by solar wind and magnetospheric plasmas  

作　　者：Lingfeng LU Ying LIU Huizong DUAN Yuanze JIANG Hsien-Chi YEH 卢凌峰;刘莹;段会宗;姜元泽;叶贤基(TianQin Research Center for Gravitational Physics and School of Physics and Astronomy,Sun Yat-sen University(Zhuhai Campus),Zhuhai 519082,People's Republic of China;MOE Key Laboratory of Fundamental Physical Quantities Measurement&Hubei Key Laboratory of Gravitation and Quantum Physics,PGMF and School of Physics,Huazhong University of Science and Technology,Wuhan 430074,People's Republic of China)

机构地区：[1]TianQin Research Center for Gravitational Physics and School of Physics and Astronomy,Sun Yat-sen University(Zhuhai Campus),Zhuhai 519082,People's Republic of China [2]MOE Key Laboratory of Fundamental Physical Quantities Measurement&Hubei Key Laboratory of Gravitation and Quantum Physics,PGMF and School of Physics,Huazhong University of Science and Technology,Wuhan 430074,People's Republic of China

出　　处：《Plasma Science and Technology》2020年第11期23-35,共13页等离子体科学和技术（英文版）

基　　金：supported by the China Postdoctoral Science Foundation(No.2018M643286);the postdoctoral funding project of the Pearl River Talent Plan。

摘　　要：Plasma turbulence may lead to additional wavefront distortion of inter-spacecraft laser beams during the operation of spaceborne gravitational wave(GW)observatories,e.g.Tian Qin.By making use of the Space Weather Modelling Framework(SWMF)model and realistic orbit data for the Tian Qin constellation,the characteristic parameters of the plasma turbulence present at the Tian Qin orbit are obtained.As a first step,this work is based on the assumptions that the cold plasma approximation is valid and that the effects of the electromagnetic field induced by charge separation within the Debye length on the laser's wavefront can be ignored.An atmospheric turbulence-laser interaction model is then applied to analyze the effects of the plasma turbulence on the inter-spacecraft laser's wavefront.The preliminary results show that the wavefront distortion caused by the plasma turbulence is 10^-9 rad,which is significantly less than the designated error budget,i.e.10^-6 rad,and thus will not affect the laser interferometry.

关 键 词：plasma turbulence gravitational wave detection laser interferometry 

分 类 号：V52[航空宇航科学与技术—人机与环境工程]