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.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - Sep 30 2020|
|Event||19th Annual International Astrophysics Conference, AIAC 2020 - Santa Fe, United States|
Duration: Mar 9 2020 → Mar 13 2020
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)