Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...409..465m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 409, no. 1, p. 465-475.
Astronomy and Astrophysics
Astrophysics
37
Electron Acceleration, Ion Temperature, Microwave Emission, Resonant Frequencies, Solar Electrons, Solar Flares, Energy Transfer, Gamma Rays, Solar Atmosphere, Solar X-Rays
Scientific paper
The particle acceleration processes here studied are driven by the relaxation of unstable ion ring distributions; these produce strong wave activity at the lower hybrid resonance frequency which collapses, and forms energetic electron and ion tails. The results obtained are applied to the problem posed by the production of energetic particles by solar flares. The numerical simulation results thus obtained by a 2 1/2-dimensional particle-in-cell code show a simultaneous acceleration of electrons to 10-500 keV energies, and of ions to as much as the 1 MeV range; the energy of the latter is still insufficient to account for gamma-ray emission in the 4-6 MeV range, but furnish a seed population for further acceleration.
Bingham Richard
Dawson John M.
McClements K. G.
Spicer Daniel S.
Su Jiangtao
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