Positron scattering from alkaline-earth elements |
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Authors: | Ritu Raizada K L Baluja |
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Institution: | (1) Department of Physics and Astrophysics, University of Delhi, 110 007 Delhi, India |
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Abstract: | The total (elastic + inelastic) cross sections fore
+ impact on alkaline-earth elements from Be to Ra are calculated by employing a complex spherical optical potential. This potential
has static, polarization and absorption components. The positron energy range is from a few eV to several thousand eV. We
have compared our elastic cross sections for Mg and Ca with the other available results and the agreement is good for energies
above 100eV. We have also compared our absorption cross sections withe
− ionization cross sections at high energies where our absorption cross sections are in good accord. We have made Bethe plots
fore
+ scattering on these elements. |
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Keywords: | Positron alkaline-earth elements static potential optical potential polarization potential absorption potential inelastic and total cross sections Bethe plot |
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