School of Electronic Information Wuhan University Wuhan 430072 China;
School of Electronic Information Wuhan University Wuhan 430072 China;
School of Electronic Information Wuhan University Wuhan 430072 China;
School of Electronic Information Wuhan University Wuhan 430072 China;
School of Electronic Information Wuhan University Wuhan 430072 China;
School of Physics and Astronomy University of Minnesota Twin Cities Minneapolis USA;
Los Alamos National Laboratory Los Alamos New Mexico USA;
low-frequency chorus emissions; anisotropic temperature instability; whistler mode; Van Allen Probes; linear growth rate;