Open AccessMapping Jupiter's outer radiation belt
Author(s) -
Selesnick R. S.,
Cohen C. M. S.,
Stone E. C.
Publication year - 2001
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2001ja000061
Subject(s) - adiabatic process , physics , adiabatic invariant , van allen radiation belt , anisotropy , flux (metallurgy) , jupiter (rocket family) , radiation , computational physics , ion , magnetosphere , geophysics , magnetic field , materials science , spacecraft , optics , astronomy , quantum mechanics , metallurgy , thermodynamics
Flux maps of energetic ions in Jupiter's outer radiation belt, calculated with the aid of a model of the current sheet magnetic field, are consistent with a spatial distribution that is uniform along field lines and monotonically decreasing with radial distance. This result is supported by numerical ion trajectory calculations that predict uniform filling of drift shells at high L values. Adiabatic compression by radial transport then provides predictions of radial energy dependence and flux gradients. At lower L values, conservation of the second adiabatic invariant predicts some anisotropy with higher equatorial fluxes.