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. Author manuscript; available in PMC: 2022 Feb 22.
Published in final edited form as: Astrophys J Lett. 2021 Apr 26;911(2):L36. doi: 10.3847/2041-8213/abf436

Figure 1 –

Figure 1 –

Differential cross section for elastic collisions of helium atoms with protons (red line), He+ ions (blue), hydrogen atoms (green), and helium atoms (purple). Three panels represent collision energies 0.01, 0.1, 1, and 10 eV (top to bottom).