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A new magnetic pumping accelerator of charged particles in Jupiter's magnetosphere
Author(s) -
Mu Jianlin
Publication year - 1993
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/93gl01595
Subject(s) - magnetosphere , physics , jupiter (rocket family) , magnetosphere of jupiter , charged particle , pitch angle , torus , particle acceleration , plasma , magnetosphere of saturn , computational physics , geophysics , astronomy , magnetopause , nuclear physics , spacecraft , ion , geometry , mathematics , quantum mechanics
This paper proposes an acceleration mechanism to explain the observations of energetic particles in the inner magnetosphere of Jupiter. In the inner magnetosphere particles are convected towards and away from the Io plasma torus by the centrifugally driven interchange mode or by the longitudinal asymmetry of the magnetosphere and the Io plasma torus. They experience a varying (space‐dependent in Jupiter's frame of reference) magnetic field and are subject to pitch‐angle scattering by wave‐particle interactions. Thus, an e‐fold magnetic pumping acceleration is expected in the system. The calculations show that the accelerator can generate up to one MeV energy particles in about 10–15 times the characteristic convection time.