Similarity between Positronium-Atom and Electron-Atom Scattering
نویسندگان
چکیده
منابع مشابه
Similarity between positronium-atom and electron-atom scattering.
We employ the impulse approximation for a description of positronium-atom scattering. Our analysis and calculations of Ps-Kr and Ps-Ar collisions provide a theoretical explanation of the similarity between the cross sections for positronium scattering and electron scattering for a range of atomic and molecular targets observed by S. J. Brawley et al. [Science 330, 789 (2010)].
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to lead to the correct result for the other three. The present model, which is constructed so as to reproduce the Ps-H resonance at 4.01 eV, automatically yields a Ps-H bound state at −1.05 eV which compares well with the accurate value of −1.067 eV. The model leads to a singlet scattering length of 3.72a0 and effective range of 1.67a0, whereas the correlations suggest the precise values of 3.5...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2014
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.112.243201