Elastic positron-cadmium scattering at low energies

Bromley, M. W. J. and Mitroy, J. (2010) Elastic positron-cadmium scattering at low energies. Physical Review A, 81 5 Article # 052708: . doi:10.1103/PhysRevA.81.052708

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Author Bromley, M. W. J.
Mitroy, J.
Title Elastic positron-cadmium scattering at low energies
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2010-05-01
Year available 2010
Sub-type Article (original research)
DOI 10.1103/PhysRevA.81.052708
Open Access Status File (Publisher version)
Volume 81
Issue 5 Article # 052708
Total pages 7
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Formatted abstract
The elastic and annihilation cross sections for positron-cadmium scattering are reported up to the positronium-formation threshold (at 2.2 eV). The low-energy phase shifts for the elastic scattering of positrons from cadmium were derived from the bound and pseudostate energies of a very large basis configuration-interaction calculation of the e+-Cd system. The s-wave binding energy is estimated to be 126±42 meV, with a scattering length of Ascat=(14.2±2.1)a0, while the threshold annihilation parameter, Zeff, was 93.9±26.5. The p-wave phase shift exhibits a weak shape resonance that results in a peak Zeff of 91±17 at a collision energy of about 490±50 meV. © 2010 The American Physical Society.
Keyword Ground-State
S-1(0) State
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 0665020
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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