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dc.contributor.authorWu, M. S.
dc.contributor.authorZhang, Junyi
dc.contributor.authorGao, X.
dc.contributor.authorQian, Y.
dc.contributor.authorXie, H. H.
dc.contributor.authorVarga, K.
dc.contributor.authorYan, Z. C.
dc.contributor.authorSchwingenschlögl, Udo
dc.date.accessioned2020-06-03T13:10:08Z
dc.date.available2020-06-03T13:10:08Z
dc.date.issued2020-04-21
dc.date.submitted2019-11-01
dc.identifier.citationWu, M.-S., Zhang, J.-Y., Gao, X., Qian, Y., Xie, H.-H., Varga, K., … Schwingenschlögl, U. (2020). Confined variational calculation of o -Ps–He scattering properties. Physical Review A, 101(4). doi:10.1103/physreva.101.042705
dc.identifier.issn2469-9934
dc.identifier.issn2469-9926
dc.identifier.doi10.1103/PhysRevA.101.042705
dc.identifier.urihttp://hdl.handle.net/10754/662996
dc.description.abstractHigh-precision quantum-mechanical calculations have been developed to investigate positronium (Ps) scattering. Positronium scattering experiments are a powerful tool to study positronium-matter interactions, but the theoretical description of these experiments needs better accuracy. We have developed an ab initio confined variational approach that can reach higher collision energy, includes higher orbital momenta and uses small confining radii. Calculation of the Ps-He momentum-transfer cross section shows that the experimental Doppler broadening spectroscopy results are questionable. The energy dependence of the pickoff annihilation rate is also calculated, demonstrating an important role of the so far neglected P-wave contribution.
dc.description.sponsorshipM.-S.W. was supported by the National Natural Science Foundation of China under Grant No. 11704399. J.-Y.Z. was supported by the “Hundred Talents Program” of the Chinese Academy of Sciences. Z.-C.Y. was supported by the NSERC of Canada and in part by the Chinese Academy of Sciences within the CAS/SAFEA International Partnership Program for Creative Research Teams. The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). The authors are thankful for the computational resources provided by the ACEnet of Canada.
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttps://link.aps.org/doi/10.1103/PhysRevA.101.042705
dc.rightsArchived with thanks to Physical Review A
dc.titleConfined variational calculation of o -Ps-He scattering properties
dc.typeArticle
dc.contributor.departmentComputational Physics and Materials Science (CPMS)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalPhysical Review A
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionState Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
dc.contributor.institutionBeijing Computational Science Research Center, Beijing 100193, China
dc.contributor.institutionDepartment of Computer Science and Technology, East China Normal University, Shanghai 200062, China
dc.contributor.institutionLSEC, ICMSEC, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China
dc.contributor.institutionDepartment of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA
dc.contributor.institutionDepartment of Physics, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 5A3
dc.identifier.volume101
dc.identifier.issue4
kaust.personZhang, Junyi
kaust.personSchwingenschlögl, Udo
dc.date.accepted2020-03-25
dc.identifier.eid2-s2.0-85085191514
refterms.dateFOA2020-06-03T13:11:55Z


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