Abstract
We have investigated the elastic scattering of positrons from the ground state of hydrogen atoms interacting with exponential cosine-screened Coulomb potential (ECSCP). A simple expression for partial-wave scattering amplitude, derived within the framework of the second-order distorted wave Born approximation, has been used to calculate the scattering parameters. A detailed study has been made on differential and total cross sections in the energy range 20–300 eV. To the best of our knowledge, this study on the differential and total cross sections for elastic positron–hydrogen collisions in ECSCP is reported for the first time.
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