Статья

Charge transfer in positronium–proton collisions: comparison of classical and quantum-mechanical theories

Harindranath AmbalampitiyaDepartment of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0299, United States of AmericaDmitry V. FursaCurtin Institute for Computation and Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, AustraliaA. S. KadyrovCurtin Institute for Computation and Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, AustraliaI. BrayCurtin Institute for Computation and Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth, WA 6845, AustraliaI. I. FabrikantDepartment of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0299, United States of America

2020en

ABI

Аннотация

Charge transfer in positronium–proton collisions is calculated using the quantum-mechanical convergent close-coupling method and classical trajectory Monte-Carlo method. Previous calculations revealed that at low incident energy the cross section in both theories scales as , where nPs and EPs are the principal quantum number and the center-of-mass energy of the incident positronium atom, respectively. However, the quantum cross section is systematically lower than classical one in absolute magnitude. To investigate the origin of this quantum suppression effect, we compare the charge transfer probabilities as functions of the impact parameter. We show that the quantum suppression in the cross section is mainly due to the low-impact parameter behavior of the probabilities governed by the quantum uncertainty principle.

Перевод пока недоступен

Идентификаторы

DOI: 10.1088/1361-6455/ab91e2

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar