Lower Hybrid to Whistler Wave Conversion

[摘要] In this presentation we discuss recent work concerning the conversion of whistler waves to lower hybrid waves (as well as the inverse process). These efforts have been motivated by the issue of attenuation of upward propagating whistler waves in the ionosphere generated by VLF transmitters on the ground, i.e., the 'Starks 20 db' problem, which affects the lifetimes of energetic electrons trapped in the geomagnetic field at low magnetic altitude (L). We discuss recent fluid and kinetic plasma simulations as well as ongoing experiments at UCLA to quantify linear and nonlinear mode conversion of lower hybrid to whistler waves.

[发布日期] 2012-07-16

[学科分类] 原子、分子光学和等离子物理

[关键词] ALTITUDE;ATTENUATION;GEOMAGNETIC FIELD;IONOSPHERE;KINETICS;MODE CONVERSION;PLASMA SIMULATION;TAIL ELECTRONS;UCLA;WHISTLERS;RADIO NOISE