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Positron Scattering and Annihilation from the Hydrogen Molecule at Zero Energy

Zhang, Jun-Yi, Mitroy, Jim and Varga, Kalman (2009). Positron Scattering and Annihilation from the Hydrogen Molecule at Zero Energy. Physical Review Letters,103(22):223202-1-223202-4.

Document type: Journal Article
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IRMA ID 79608405xPUB11
Title Positron Scattering and Annihilation from the Hydrogen Molecule at Zero Energy
Author Zhang, Jun-Yi
Mitroy, Jim
Varga, Kalman
Journal Name Physical Review Letters
Publication Date 2009
Volume Number 103
Issue Number 22
ISSN 0031-9007   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-72649103498
Start Page 223202-1
End Page 223202-4
Total Pages 4
Place of Publication College Park, United States
Publisher American Physical Society
HERDC Category C1 - Journal Article (DEST)
Abstract The confined variational method is used to generate a basis of correlated Gaussians to describe the interaction region wave function for positron scattering from the H2 molecule. The scattering length was ≈-2.7a0 while the zero energy Zeff of 15.7 is compatible with experimental values. The variation of the scattering length and Zeff with internuclear distance was surprisingly rapid due to virtual state formation at R≈3.4a0.
DOI http://dx.doi.org/10.1103/PhysRevLett.103.223202   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Additional Notes Copyright by the American Physical Society


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