Generation of VLF Mode Instability by Generalized Distribution Function in the Presence of Parallel AC Electric Field in Uranus  

作　　者：R.S.PANDEY M.SINGH Pramod KUMAR K.M.SINGH S.KUMAR 

机构地区：[1]Department of Applied Physics, Amity School of Science and Technology,Amity University Noida UP [2]Department of Physics, J. L. N. College Chakradharpur Ranchi University Ranch [3]Department of Physics, Veer Kunwar Singh University [4]Department of Physics, Nalanda college Biharsharif Nalanda MU Bodh Gaya Bihar

出　　处：《Plasma Science and Technology》2010年第4期421-425,共5页等离子体科学和技术（英文版）

摘　　要：VLF （very low frequency） mode instability with parallel AC electric field was studied for generalized loss-cone distribution with an index j, which is reducible to bi-Maxwellian, loss- cone and delta function for j = 0, 1 and co. The particle trajectories and dispersion relation are obtained through a kinetic approach and method of characteristic solutions. The calculations are compared with the observations of low frequency waves of Voyager 2. The growth rate of plasma parameters suited to magnetosphere of Uranus is obtained. It is inferred that the magnitude as well as frequency of AC （alternating current） field increases the growth rate and widen the band width significantly. In addition to temperature anisotropy, particles in plasma having generalized loss-cone distribution provide an additional source of energy.VLF （very low frequency） mode instability with parallel AC electric field was studied for generalized loss-cone distribution with an index j, which is reducible to bi-Maxwellian, loss- cone and delta function for j = 0, 1 and co. The particle trajectories and dispersion relation are obtained through a kinetic approach and method of characteristic solutions. The calculations are compared with the observations of low frequency waves of Voyager 2. The growth rate of plasma parameters suited to magnetosphere of Uranus is obtained. It is inferred that the magnitude as well as frequency of AC （alternating current） field increases the growth rate and widen the band width significantly. In addition to temperature anisotropy, particles in plasma having generalized loss-cone distribution provide an additional source of energy.

关 键 词：generation of VLF mode instability in Uranus 

分 类 号：P185.6[天文地球—天文学] TQ327.9[化学工程—合成树脂塑料工业]