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Configuration-interaction calculations of positron binding to zinc and cadmium

Bromley, Michael W. J. and Mitroy, Jim (2002). Configuration-interaction calculations of positron binding to zinc and cadmium. Physical Review A (Atomic, Molecular and Optical Physics),65(6):062506-1-062506-10.

Document type: Journal Article
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Title Configuration-interaction calculations of positron binding to zinc and cadmium
Author Bromley, Michael W. J.
Mitroy, Jim
Journal Name Physical Review A (Atomic, Molecular and Optical Physics)
Publication Date 2002
Volume Number 65
Issue Number 6
ISSN 1094-1622   (check CDU catalogue open catalogue search in new window)
Start Page 062506-1
End Page 062506-10
Total Pages 10
Place of Publication College Park, United States
Publisher American Physical Society
Field of Research 0202 - Atomic, Molecular, Nuclear, Particle and Plasma Physics
0204 - Condensed Matter Physics
0205 - Optical Physics
HERDC Category C1 - Journal Article (DEST)
Abstract The configuration-interaction method is applied to the study of positronic zinc (e+Zn) and positronic cadmium (e+Cd). The estimated binding energies and annihilation rates were 0.00373 hartree and 0.42×109 sec-1 for e+Zn and 0.006 10 hartree and 0.56×109 sec-1 for e+Cd. The low-energy elastic cross section and Zeff were estimated from a model potential that was tuned to the binding energies and annihilation rates. Since the scattering lengths were positive (14.5a0 for Zn and 11.6a0 for Cd) the differential cross sections are larger at backward angles than at forward angles just above threshold. The possibilities of measuring differential cross sections to confirm positron binding to these atoms is discussed.
DOI http://dx.doi.org/10.1103/PhysRevA.65.062506   (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 The American Physical Society


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