%0 Journal Article %T Electron pitch-angle diffusion: resonant scattering by waves vs.nonadiabatic effects %+ Space Research Institute of the Russian Academy of Sciences (IKI) %+ Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) %+ D.V. Skobeltsyn Institute of Nuclear Physics (SINP) %+ Department of Earth and Space Sciences [Los Angeles] %+ CEA Le Ripault (CEA Le Ripault) %+ National Taras Shevchenko University of Kiev %A Artemyev, A.V. %A Orlova, K.G. %A Mourenas, Didier %A Agapitov, O. V. %A Krasnoselskikh, V.V. %Z Ministry of Education and Science of Russian Federation,project 8527. %< avec comité de lecture %@ 0992-7689 %J Annales Geophysicae %I European Geosciences Union %V 31 %P 1485–1490 %8 2013 %D 2013 %R 10.5194/angeo-31-1485-2013 %K Magnetospheric physics (energetic particles %K precipitating) – space plasma physics (charged particle motion and acceleration %K wave–particle interactions) %Z Sciences of the Universe [physics]Journal articles %X In this paper we investigate the electron pitchanglediffusion coefficients in the night-side inner magnetospherearound the geostationary orbit (L 7) due to magneticfield deformation. We compare the effects of resonantwave–particle scattering by lower band chorus waves and theadiabaticity violation of electron motion due to the strongcurvature of field lines in the vicinity of the equator. Fora realistic magnetic field configuration, the nonadiabatic effectsare more important than the wave–particle interactionsfor high energy (> 1 MeV) electrons. For smaller energy,the scattering by waves is more effective than nonadiabaticone. Moreover, the role of nonadiabatic effects increases withparticle energy. Therefore, to model electron scattering andtransport in the night-side inner magnetosphere, it is importantto take into account the peculiarities of high-energy electrondynamics. %G English %2 https://insu.hal.science/insu-01174680/document %2 https://insu.hal.science/insu-01174680/file/angeo-31-1485-2013.pdf %L insu-01174680 %U https://insu.hal.science/insu-01174680 %~ OBSPM %~ CEA %~ INSU %~ CNRS %~ UNIV-ORLEANS %~ CNES %~ OSUC %~ LPC2E %~ DAM %~ PSL %~ OBSPM-PSL