Collisionless Shock 3

[HEDS3-04] Particle Acceleration in a Relativistic Weibel-Mediated Shock Propagating to Electron-Proton-Helium Plasmas with Solar Abundance

*SARA TOMITA¹, Yutaka Ohira² (1. Tohoku University, 2. The University of Tokyo)

The observed chemical abundance of the cosmic rays shows enhancements than solar abundances (Batisita et al. 2019). We perform the first PIC simulation of a relativistic collisionless shock propagating to the electron-proton-helium plasma with solar abundance. We found that the number of energetic helium ions is larger than that of the protons. We can also explain their acceleration fraction analytically.