Preferential acceleration of heavy ions in multi-component plasmas

Details Preferential acceleration of heavy ions in multi-component plasmas Preferential acceleration of heavy ions in multi-component plasmas

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3099m&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 16, p. 3099-3102

Physics

Plasma Physics

3

Interplanetary Physics: Energetic Particles, Solar, Interplanetary Physics: Solar Wind Plasma, Space Plasma Physics: Charged Particle Motion And Acceleration, Space Plasma Physics: Wave/Particle Interactions

Scientific paper

We discuss preferential, perpendicular acceleration of α particles in large amplitude magnetohydrodynamic (MHD) waves by using a test particle simulation. In a 3 component plasma that consists of electrons, protons and α particles, one of the wave branches has phase velocity larger than the Alfvén velocity in a long wave length regime. We find that the wave-particle interaction between this wave and the other Alfvén wave leads to strong anisotropic acceleration in perpendicular direction to the ambient magnetic field. We examine the wave-particle interaction for a 3 component plasma, and obtain good agreement with the test particle simulation.

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