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Lower hybrid-resonance acceleration of electrons and ions in solar-flares and the associated microwave emission

机译:太阳耀斑中电子和离子的杂化共振加速度较低,并且相关的微波发射

摘要

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.
机译:这里研究的粒子加速过程是由不稳定的离子环分布的松弛驱动的。它们在较低的混合共振频率下产生很强的波活动,该频率崩溃并形成高能电子和离子尾巴。获得的结果适用于由太阳耀斑产生高能粒子所引起的问题。这样,通过2 1/2维的单元格内粒子代码获得的数值模拟结果显示,电子同时加速到10-500 keV能量,离子加速到1 MeV范围。后者的能量仍然不足以解释4-6 MeV范围内的伽马射线发射,但为进一步加速提供了种子种群。

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