Differential cross sections for elastic and inelastic positronium-hydrogen-atom scattering

Abstract

We report results of differential cross sections for elastic scattering, target-elastic Ps excitations and target-inelastic excitation of hydrogen in a five-state coupled-channel model allowing for Ps(1s)H(2s,2p) and Ps(2s,2p)H(1s) excitations using a recently proposed time-reversal-symmetric regularized electron-exchange model potential. The present model yields a singlet Ps-H S-wave resonance at 4.01 eV of width 0.15 eV and a P-wave resonance at 5.08 eV of width 0.004 eV. We also study the effect of the inclusion of the excited Ps and H states on the convergence of the coupled-channel scheme.

9 pages, 6 ps figures, Accepted in Phys. Rev. A

References in corpus (2)

• Positronium atom scattering by H_2 in a coupled-channel framework
• Differential and partial cross sections of elastic and inelastic positronium-helium-atom scattering

Cited by in corpus (5)

• Bose-Einstein condensation dynamics from the numerical solution of the Gross-Pitaevskii equation
• Bose-Einstein condensation dynamics in three dimensions by the pseudospectral and finite-difference methods
• Variational calculation of positronium-helium-atom scattering length
• Positronium scattering by atoms and molecules at low energies
• Variational Calculations of Positronium Scattering with Hydrogen