INFLUENCE OF THE CHARGE-EXCHANGE AND COULOMB COLLISIONS ON PROTON PITCH-ANGLE DISTRIBUTIONS FORM IN THE EARTH'S RADIATION BELTSстатья
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Аннотация:Radial evolution of the proton pitch angle distributions at L<5.25 for 0.03<E<10.0 MeV is considered for various models of the radial diffusion (with various correlation between coefficients of the magnetic and electric diffusion and various dependencies of these coefficients on geomagnetic latitude) and selected spacial distributions of the neutral exosphere atoms and cold plasma of the plamasphcre. The results of the numerical simulation are compared with experimental data. It is shown that the best agreement of numerical models with experimental data is achieved using for the numerical simulation radial diffusion coefficients that are independent of geomagnetic latitude, given by D-E = 5 x 10(-6) L(10) / (L(4) + mu(2)) and D-M = 5 x 10(-9) L(10) R(E)(2)day(-1).