PLASMA-MASER INSTABILITY OF BERNSTEIN MODE IN PRESENCE OF MAGNETOHYDRODYNAMIC TURBULENCE

A theoretical study is made on the amplification mechanism of electros tatic Bernstein mode wave in presence of kinetic Alfven wave turbulenc e in a magnetized plasma on the basis of plasma-maser interaction. It is shown that a test high frequency electrostativ Bernstein mode wave is unstable in the presence of low frequency kinetic Alfven wave turbu lence. The growth rate of the Bernstein wave vanishes only in an unmag netized plasma. Because of the universal existence of the kinetic Alfv en waves in large scale plasmas, the results have potential importance in space and astrophysical radiation processes.