HR: 1330h
AN: P32A-1070    [PDF]
TI: Particle Acceleration Inferred From Magnetic Field Fluctuations Measured in Planetary Magnetospheres.
AU: Perez de Tejada, H
EM: perezdet@igeofcu.unam.mx
AF: HECTOR PEREZ DE TEJADA, INSTITUTE OF GEOPHYSICS, UNAM,, Mexico D. F., D. 04510 Mexico
AB: A numerical code has been prepared to examine the acceleration that charged particles experience in the presence of magnetic field fluctuations that have been measured in planetary magnetospheres. Values of a fluctuating electric field derived from magnetic field measurements are used in the momentum equation of charged particles seeded in the magnetospheric plasma. A comparative case is made with the Voyager II magnetic field measurements that were obtained in the Saturn magnetosphere where very energetic particle fluxes were reported. By assuming suitable values for the parameters that are related to changes in the dynamics of the particles from effects associated with the fluctuating electric field it is found that particles injected with very low (5 eV) energies can be strongly accelerated to reach much higher (100 MeV) energies subject to a large number of hitting events (the latter are used in the program to indicate changes in the particle acceleration over a predetermined specific distance and are randomly obtained from the histogram of electric field fluctuations).
DE: 2756 Planetary magnetospheres (5443, 5737, 6030)
DE: 5443 Magnetospheres (2756)
DE: 5737 Magnetospheres (2756)
DE: 6030 Magnetic fields and magnetism
SC: Planetary Sciences [P]
MN: 2003 Fall Meeting