Abstract

Ps ionization in Ps–atom scattering is of fundamental importance. The singly differential cross sections (SDCS) provides more accurate information to test a theory than integrated or total ionization cross section since the averaging over one parameter is not required. We evaluate the SDCS for Ps-ionization with respect to the longitudinal energy distribution of the break-up positron and electron in Ps–H and Ps–He scattering and compare them with the recently available experimental and theoretical data.

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