Статья

Antiproton collisions with excited positronium

M. CharltonDepartment of Physics, Faculty of Science and Engineering, Swansea University, Swansea SA2 8PP, United KingdomHarindranath AmbalampitiyaQuantemol Ltd., 320 City Rd, London EC1V 2NZ, UK and Department 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, USAI. KalinkinCurtin Institute for Computation and Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth WA 6845, AustraliaDmitry 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

2023en

ABI

Аннотация

We present results of calculations of several processes resulting from positronium (Ps) collisions with antiprotons: antihydrogen formation, Ps breakup, and ${n}_{\mathrm{Ps}}$-changing collisions. Calculations utilize the quantum convergent close-coupling (CCC) method and the classical trajectory Monte Carlo (CTMC) method. We identify a region of Ps principal quantum numbers ${n}_{\mathrm{Ps}}$ and Ps energies where the classical description is valid and where the CCC calculations become computationally too expensive. This allows us to present the most complete and reliable set of cross sections in a broad range of ${n}_{\mathrm{Ps}}$ and initial orbital momentum quantum numbers ${l}_{\mathrm{Ps}}$ which are necessary for experiments with antihydrogen at CERN.

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Идентификаторы

DOI: 10.1103/physreva.107.012814

Цитирования и источники

Цитирований: 2Использованных источников: 0

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