Multi-Ion-Species Effects on Power Spectra and Autocorrelation Functions of Ion Bernstein Waves

抄録

Ion Bernstein waves in plasmas containing multiple ion species are studied numerically. In thermal equilibrium plasmas, a great number of Bernstein waves are excited at the harmonics of ion cyclotron frequencies. The autocorrelation function of the quasi-mode consisting of these waves is strongly damped and does not recover to its initial value, even if the abundances of heavy ions are very small.