Effect of H${}^{-}$ ion formation on Positronium-Hydrogen elastic scattering

Abstract

Effect of charge-transfer recombination for positronium (Ps) scattering is studied on Ps-H system using coupled-channel formalism considering a new rearrangement channel Ps+H --> e^+ + H^- and exchange. The correlation and continuum effects introduced by this charge-transfer channel result to substantial convergence to the low energy scattering parameters. Effects on scattering length, PsH binding energy, and low-energy (0-10 eV) phase-shifts and cross sections are evaluated and H${}^{-}$ formation cross sections are reported from above the threshold (6.438 eV) to 100 eV.

19 pages and three figures

References in corpus (2)

• Positronium atom scattering by H_2 in a coupled-channel framework
• Convergent variational calculation of positronium-hydrogen-atom scattering lengths

Cited by in corpus (3)

• A new path toward gravity experiments with anti-hydrogen
• Formation of positron-atom bound states in collisions between Rydberg Ps and neutral atoms
• Variational Calculations of Positronium Scattering with Hydrogen