Van Allen Probes Bibliography is from August 2012 through September 2021 Notice:

Simultaneous Radial and Pitch Angle Diffusion in the Outer Electron Radiation Belt
Author  Chiu, Y.; Nightingale, R.; Rinaldi, M.; 
Keywords  Radial Transport 
Abstract  A solution of the bimodal (radial and pitch angle) diffusion equation for the radiation belts is developed with special regard for the requirements of satellite radiation belt data analysis. In this paper, we use this solution to test the bimodal theory of outer electron belt diffusion by confronting it with satellite data. Satellite observations, usually over finite volumes of (L, t) space, are seldom sufficient in spacetime duration to cover the relaxation to equilibrium of the entire radiation belt. Since time scales of continuous data coverage are often comparable to that of radiation belt disturbances, it is therefore inappropriate to apply impulsive semiinfinite time response solutions of diffusion theory to interpret data from a finite window of (L, t) space. Observational limitations indicate that appropriate solutions for the interpretation of satellite data are general solutions for a finitevolume boundary value problem in bimodal diffusion. Here we test such a solution as the prime candidate for comprehensive radiation belt dynamic modeling by applying the solution and developing a method of analysis to radiation belt electron data obtained by the SCATHA satellite at moderate geomagnetic activity. The results and the generality of our solution indicate its promise as a new approach to dynamic modeling of the radiation belts. 
Year of Publication  1988 
Journal  Journal of Geophysical Research 
Volume  93 
Number of Pages  26192632 
Section  
Date Published  04/1988 
ISBN  
URL  http://onlinelibrary.wiley.com/doi/10.1029/JA093iA04p02619/abstract 
DOI  10.1029/JA093iA04p02619 