Special features of cyclotron radiation in anisotropic plasmas |
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| Authors: | P C W Fung P L Leung |
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| Institution: | (1) Physics Department, University of Hong Kong, Hong Kong;(2) Physics Department, University of Hong Kong, Hong Kong;(3) Physics Department, Hong Kong Baptist College, Kowloon, Hong Kong |
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| Abstract: | We analyze the special features of cyclotron radiation in four different modes radiated by a mildly relativistic electron current in an anisotropic plasma, taking into consideration that the radiation is transmitted along the group velocity, rather than the wave normal direction. A systematic series of numerical analysis is carried out, to demonstrate the characteristics of the focussing effect and Doppler effect of the radiation, arising from anisotropy. The parameters used pertain to plasmas and radiators of the types encountered in the terrestrial upper atmosphere and the solar corona. |
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