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29 March 2024
 
  » arxiv » physics/0001024

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Scattering of positronium by H, He, Ne, and Ar
P. K. Biswas ; Sadhan K. Adhikari ;
Date 11 Dec 1999
Journal Chem.Phys.Lett. 317 (2000) 129-134
Subject Atomic Physics; Atomic and Molecular Clusters; Chemical Physics | physics.atom-ph cond-mat nucl-th physics.atm-clus physics.chem-ph quant-ph
AbstractThe low-energy scattering of ortho positronium (Ps) by H, He, Ne, and Ar atoms has been investigated in the coupled-channel framework by using a recently proposed time-reversal-symmetric nonlocal electron-exchange model potential with a single parameter $C$. For H and He we use a three-Ps-state coupled-channel model and for Ar and Ne we use a static-exchange model. The sensitivity of the results is studied with respect to the parameter $C$. Present low-energy cross sections for He, Ne and Ar are in good agreement with experiment.
Source arXiv, physics/0001024
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