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Generating phase shifts from pseudostate energy shifts

Mitroy, Jim and Bromley, Michael W. J. (2007). Generating phase shifts from pseudostate energy shifts. Physical Review Letters,98(17):173001-1-173001-4.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 16 times in Scopus Article | Citations

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IRMA ID 80791673xPUB69
Title Generating phase shifts from pseudostate energy shifts
Author Mitroy, Jim
Bromley, Michael W. J.
Journal Name Physical Review Letters
Publication Date 2007
Volume Number 98
Issue Number 17
ISSN 0031-9007   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-34247363711
Start Page 173001-1
End Page 173001-4
Total Pages 4
Place of Publication College Park, United States
Publisher American Physical Society
Field of Research MATHEMATICAL SCIENCES
PHYSICAL SCIENCES
ENGINEERING
HERDC Category C1 - Journal Article (DEST)
Abstract A simple way to generate low energy phase shifts for elastic scattering using bound-state calculations is postulated, validated, and applied to the problem of e(+)-Mg scattering. The essence of the method is to use the energy shift between a small reference calculation and the largest possible calculation of the lowest energy pseudostate to tune a semiempirical optical potential. The l = 1 partial wave for e(+)-Mg scattering is predicted to have a shape resonance at an energy of about 0.13 eV. The value Of Z(eff) at the center of the resonance is about 1500.
Keywords variational method
ground state
positron
scattering
hydrogen
annihilation
convergence
matrixATOMS
ATOMS
DOI http://dx.doi.org/10.1103/PhysRevLett.98.173001   (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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