Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

Positron-atom scattering using pseudostate energy shifts

Mitroy, Jim, Zhang, Jun-Yi, Bromley, Michael W. J. and Young, S. I. (2008). Positron-atom scattering using pseudostate energy shifts. Physical Review A (Atomic, Molecular and Optical Physics),78(1):012715-1-012715-13.

Document type: Journal Article
Attached Files (Some files may be inaccessible until you login with your CDU eSpace credentials)
Name Description MIMEType Size Downloads
Download this reading Mitroy_7296.pdf Published version application/pdf 342.97KB 49
Reading the attached file works best in Firefox, Chrome and IE 9 or later.

IRMA ID 80791673xPUB54
Title Positron-atom scattering using pseudostate energy shifts
Author Mitroy, Jim
Zhang, Jun-Yi
Bromley, Michael W. J.
Young, S. I.
Journal Name Physical Review A (Atomic, Molecular and Optical Physics)
Publication Date 2008
Volume Number 78
Issue Number 1
ISSN 1050-2947   (check CDU catalogue  open catalogue search in new window)
Scopus ID 2-s2.0-48349102097
Start Page 012715-1
End Page 012715-13
Total Pages 13
Place of Publication College Park, United States
Publisher Amercian 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 A method to generate low-energy phase shifts for elastic scattering using bound-state calculations is applied to the problem of e+-Mg and e+-Zn scattering after an initial validation on the e+-Cu system. The energy shift between a small reference calculation and the largest possible configuration interaction calculation of the lowest-energy pseudostate is used to tune a semiempirical optical potential. The potential was further fine-tuned by utilizing the energy of the second lowest pseudostate. The s- and p-wave phase shifts for positron scattering from Mg and Zn are given from threshold to the first excitation threshold. The e+-Mg cross section has a prominent p-wave shape resonance at an energy of about 0.096 eV with a width of 0.106 eV. The peak cross section for e+-Mg scattering is about 4800a02, while Zeff achieves a value of 1310 at an energy of 0.109 eV.
DOI http://dx.doi.org/10.1103/PhysRevA.78.012715   (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


© copyright

Every reasonable effort has been made to ensure that permission has been obtained for items included in CDU eSpace. If you believe that your rights have been infringed by this repository, please contact digitisation@cdu.edu.au.

 
Versions
Version Filter Type
Access Statistics: 64 Abstract Views, 50 File Downloads  -  Detailed Statistics
Created: Wed, 22 Apr 2009, 12:00:03 CST by Sarena Wegener