Scattering of near-zero-energy electrons and positrons by H2

Handle URI:
http://hdl.handle.net/10754/552793
Title:
Scattering of near-zero-energy electrons and positrons by H2
Authors:
Zhang, J.-Y.; Yang, Y.-J.; Qian, Y.; Yan, Z.-C.; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
The parameters for S-wave elastic scattering of near-zero-energy electrons and positrons by H2 molecules are calculated using the stabilization method with explicitly correlated Gaussians. The confined variational method is applied to optimize the Gaussians to describe the short-range interaction of incident e± with H2 in the fixed-nuclei approximation. For e+-H2 scattering the scattering length of previous work [Phys. Rev. Lett. 103, 223202 (2009)] is substantially improved. More importantly, for e−-H2 scattering, from first principles, the scattering length is computed as a function of the internuclear distance. In the case that the two nuclei are at the equilibrium distance the results are in a good agreement with values derived from fitting experimental total and diffusion cross sections to the modified effective range theory.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Scattering of near-zero-energy electrons and positrons by H2, 2014, 89 (4) Physical Review A
Publisher:
American Physical Society (APS)
Journal:
Physical Review A
Issue Date:
15-Apr-2014
DOI:
10.1103/PhysRevA.89.042703
Type:
Article
ISSN:
1050-2947; 1094-1622
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevA.89.042703
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, J.-Y.en
dc.contributor.authorYang, Y.-J.en
dc.contributor.authorQian, Y.en
dc.contributor.authorYan, Z.-C.en
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2015-05-14T08:27:27Zen
dc.date.available2015-05-14T08:27:27Zen
dc.date.issued2014-04-15en
dc.identifier.citationScattering of near-zero-energy electrons and positrons by H2, 2014, 89 (4) Physical Review Aen
dc.identifier.issn1050-2947en
dc.identifier.issn1094-1622en
dc.identifier.doi10.1103/PhysRevA.89.042703en
dc.identifier.urihttp://hdl.handle.net/10754/552793en
dc.description.abstractThe parameters for S-wave elastic scattering of near-zero-energy electrons and positrons by H2 molecules are calculated using the stabilization method with explicitly correlated Gaussians. The confined variational method is applied to optimize the Gaussians to describe the short-range interaction of incident e± with H2 in the fixed-nuclei approximation. For e+-H2 scattering the scattering length of previous work [Phys. Rev. Lett. 103, 223202 (2009)] is substantially improved. More importantly, for e−-H2 scattering, from first principles, the scattering length is computed as a function of the internuclear distance. In the case that the two nuclei are at the equilibrium distance the results are in a good agreement with values derived from fitting experimental total and diffusion cross sections to the modified effective range theory.en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevA.89.042703en
dc.rightsArchived with thanks to Physical Review Aen
dc.titleScattering of near-zero-energy electrons and positrons by H2en
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Aen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionInstitute of Atomic and Molecular Physics, Jilin University, Changchun 130012, Chinaen
dc.contributor.institutionDepartment of Computer Science and Technology, East China Normal University, Shanghai, Chinaen
dc.contributor.institutionDepartment of Physics, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 5A3en
dc.contributor.institutionState Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, and Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, Chinaen
kaust.authorZhang, Junyien
kaust.authorSchwingenschlögl, Udoen
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