APS -Joint Fall 2017 Meeting of the Texas Section of the APS, Texas Section of the AAPT, and Zone 13 of the Society of Physics Students- Event - Bounce resonant scattering by magnetosonic waves -- diffusion coefficients and a parametric study

摘要

Electron bounce resonant scattering is a new area ofinterest in Van Allen radiation belt modeling.Magnetosonic waves are suspected as one of the maindriving forces for bounce resonant scattering. Bouncediffusion rates with magnetosonic waves are useful inrelating simulations to observations and previousstudies have attempted to calculate and understandthese rates. In the past, these studies have used aguiding center approach for the gyrating electron,ignoring effects such as the Lamor radius effect,changes in the first adiabatic invariant and latitudinalwave power distribution. In this study, our motivation isto explore these effects in comparison with previousstudies to understand their importance. A set oftheoretical bounce diffusion rates are provided alongwith test-particle simulation diffusion rates which arefound to closely agree with each other. Additionally, weprovide a parametric study on the electron's,magnetosonic wave's and environment backgroundproperties to understand the behavior of bounceresonant scattering.