Статья

Collisions of antiprotons with excited positronium atoms

M. CharltonDepartment of Physics, Faculty of Science and Engineering, Swansea University, SA2 8PP, United KingdomHarindranath AmbalampitiyaDepartment of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588-0299, USAI. I. FabrikantDepartment of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588-0299, USADmitry 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, Australia

2021en

ABI

Аннотация

A detailed theoretical investigation of the fundamental three-body antiproton-positronium system is presented, utilizing both quantum convergent close coupling and classical trajectory methods. We evaluate scattering cross sections for all major processes, including charge transfer and breakup, over a wide range of positronium kinetic energies and states with principal quantum number ${n}_{\mathrm{Ps}}\ensuremath{\le}6$. The study has significantly extended previous work, and the direct quantum-classical comparison has revealed a systematic approach to obtaining cross sections for arbitrarily high ${n}_{\mathrm{Ps}}$. This is of major significance for prospective applications of collisions of excited positronium atoms in cold (anti-)atomic physics.

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Идентификаторы

DOI: 10.1103/physreva.104.l060803

Цитирования и источники

Цитирований: 2Использованных источников: 0

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