Modelling of interplanetary pickup ion fluxes and relevance for LISM parameters

Details Modelling of interplanetary pickup ion fluxes and relevance for LISM parameters Modelling of interplanetary pickup ion fluxes and relevance for LISM parameters

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37..555f&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 37, May 1989, p. 555-565.

Physics

17

Electron Impact, Helium Ions, Interplanetary Space, Interstellar Gas, Solar Wind, Electron Energy, Magnetohydrodynamic Waves, Neutral Atoms, Solar Electrons

Scientific paper

Interplanetary He(+) production rates are determined as a function of space coordinates, taking into account the core-halo structure of the energy distribution of solar wind electrons and their temperature distribuion with distance. In contrast to H(+) production, the He(+) production rates are shown to be higher on the downwind axis than on the upwind axis by a factor of 5. The results suggest that pickup ions under the influence of the intrinsic MHD wave turbulence in the solar wind change their primary seed distribution function by rapid pitch-angle scattering and subsequent adiabatic cooling.

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