Comparative analysis of the Compton ionization of hydrogen and positronium Ivan S. Stepantsov, Igor P. Volobuev and Yuri V. Popov Eur. Phys. J. D, 76 2 (2022) 30 Published online: 15 February 2022 DOI: 10.1140/epjd/s10053-022-00360-3