A parametric study on outer radiation belt electron evolution by superluminous R‐X mode waves

摘要: [1] A parametric study is presented on the temporal evolution of phase space density (PSD) outer radiation belt energetic electrons driven by superluminous right-hand extraordinary (R-X) mode waves at location L = 4.5. Bounce-averaged diffusion rates in pitch angle and momentum are calculated varying peak wave frequency, normal distribution, latitudinal distribution. Those used as inputs to solve a 2-D momentum-pitch equation. In particular, three cases considered: alone, +pitch rates, +cross rates. Numerical results show that 24 h, electron PSDs can enhance substantially for 1 MeV energy higher angles. Momentum dominates dynamic electrons, whereas contribution or cross-diffusion insignificant using specified model. addition, PSD evolutions sensitively dependent assumed different distributions tend be located lower angles when move smaller regions. Diffusion coefficients largely determined distributions. High-latitude R-X primarily contribute scattering equatorial (or latitude) yield efficient acceleration electrons. This result supports previous findings potentially dramatic variation dynamics under appropriate conditions.