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Critical Points of Scattering Positrons from Neon, Krypton and Xenon atoms at low energy regions by using dipole polarization potential | ||
| basrah journal of science | ||
| Article 1, Volume 25, Issue 1, 2007, Pages 60-72 PDF (0 K) | ||
| Author | ||
| A. A. Khalaf and F. A. Ali | ||
| Abstract | ||
| The elastic Scattering of positrons from Ne, Kr, and Xe atoms is studied by using a simple model potential, called polarization - correlation potential (PCP) , to represent the interaction between the positron and target atoms. This model contains the static potential and Jain correlation potential. together with the polarization interaction ( , where (0) is the dipole target polarisability. The optical potential of the e+ - atom system is treated exactly in a partial - wave analysis to extract the scattering parameters. We have calculated the phase shifts, differential cross sections (DCS’s), total cross sections (TCS’s) and momentum transfer cross sections (MTCS’s). Our results gave a good agreement with other experimental and theoretical values. We also discussed the critical points (representing the minima in the differential scattering cross section) in the low - energy e+ - Ne , Kr and , Xe scattering | ||
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