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Differential cross sections for elastic and inelastic positronium-hydrogen-atom scattering | | Sadhan K. Adhikari
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17 Dec 2000 | | Journal: | Phys. Rev. A 63 (2001) 054502 (1-4) | | Subject: | Atomic Physics; Atomic and Molecular Clusters; Chemical Physics | physics.atom-ph physics.atm-clus physics.chem-ph | | 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. | | Source: | arXiv, physics/0012040 | | Services: | Forum | Review | PDF | Favorites | |
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