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Have positron-helium scattering resonances been observed?

โœ Scribed by Antonio Zecca

Book ID
111627942
Publisher
Springer
Year
2005
Tongue
English
Weight
108 KB
Volume
37
Category
Article
ISSN
1434-6060

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Positron-helium scattering: Resonance an
Positron-helium scattering: Resonance and differential cross sections
โœ Puspitapallab Chaudhuri; Sadhan K. Adhikari ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 278 KB

We study positron-helium scattering using close coupling approximation (CCA) employing different combinations of the following basis functions: He(Isis), He(ls2s), He(ls2p), Ps(ls), and Ps(2s), where Ps stands for the positronium atom. We observe a prominent S wave resonance of width 2 eV at about 3