Open AccessRevisiting the role of magnetic field fluctuations in nonadiabatic acceleration of ions during dipolarization
Author(s) -
Nosé M.,
Ono Y.,
Christon S. P.,
Lui A. T. Y.
Publication year - 2012
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 - 10.1029/2012ja017518
Subject(s) - substorm , ion , physics , plasma sheet , plasma , magnetic field , electric field , acceleration , atomic physics , spacecraft , flux (metallurgy) , computational physics , field (mathematics) , geophysics , magnetosphere , materials science , classical mechanics , nuclear physics , astronomy , mathematics , quantum mechanics , pure mathematics , metallurgy
Using energetic (9–212 keV/e) ion flux data obtained by the Geotail spacecraft, Ono et al. (2009) statistically examined changes in the energy density of H + and O + ions in the near‐Earth plasma sheet during substorm‐associated dipolarization. They found that ions are nonadiabatically accelerated by the electric field induced by the magnetic field fluctuations whose frequencies are close to their gyrofrequencies. The present paper revisits this result and finds it still holds.