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

A time reversal symmetric regularized electron exchange model was used to elastic scattering, target elastic Ps excitations and target inelastic excitation of hydrogen in a five state coupled model. 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 were obtained using this model. The effect on the convergence of the coupled-channel scheme due to the inclusion of the excited Ps and H states was also analyzed.

Keywords

Binding energy, Electromagnetic wave propagation, Electron energy levels, Electron scattering, Electron transitions, Hydrogen, Mathematical models, Partial differential equations, Phase shift, Positrons, Resonance, Hydrogen atom scattering, Positronium, Atomic physics