@article{Tomita:2023A0, author = "Tomita, Sara and Ohira, Yutaka", title = "{Particle-in-cell Simulation of a Relativistic Shock Propagating in an Electron-Proton-Helium Plasma}", doi = "10.22323/1.444.0422", journal = "PoS", year = 2023, volume = "ICRC2023", pages = "422" }