Collisional modification to the exospheric theory of solar wind halo electron pitch angle distributions

Details Collisional modification to the exospheric theory of solar wind halo electron pitch angle distributions Collisional modification to the exospheric theory of solar wind halo electron pitch angle distributions

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.6881l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Sept. 1, 1983, p. 6881-6887. Research sponsored by the U.S. Departmen

Physics

20

Electron Scattering, Exosphere, Halos, Solar Wind, Stellar Models, Angular Distribution, Explorer 50 Satellite, Field Theory (Physics), Pitch (Inclination), Plasma Diagnostics, Plasma Dynamics, Solar Electrons

Scientific paper

From the present theoretical model of suprathermal halo, or 'strahl' solar wind electrons, including both binary collisions and conservative force fields, a collisionally modified electron pitch angle distribution is derived for comparison with IMP 8 plasma analyzer measurements in the solar wind at 1 AU. Although the collisionally modified distribution is more isotropic than that predicted by simple exospheric theory, it is found to be insufficiently isotropic to describe the measurements. This suggests that another scattering source, such as wave-particle interactions, is important for suprathermal solar wind electrons.

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