Parametric instabilities in a two ion species plasma as a driver of super Alfvénic waves

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Abstract

Linear dispersion relation of parametric instabilities of a left hand circularly polarized wave in a three species plasma consisting electrons, protons, and α particles is derived and the obtained dispersion relation is numerically solved. It is shown that the so-called super Alfvénic waves, which are thought to play important roles in preferential acceleration of heavy ions, can get excited through a parametric decay instability when the parent wave is on the proton cyclotron branch and the plasma beta is sufficiently low. A variety of other parametric instabilities are also generated.

Original languageEnglish
Article number012013
JournalJournal of Physics: Conference Series
Volume1620
Issue number1
DOIs
Publication statusPublished - Sep 30 2020
Event19th Annual International Astrophysics Conference, AIAC 2020 - Santa Fe, United States
Duration: Mar 9 2020Mar 13 2020

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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