S-, P- and D-wave resonances in positronium-sodium and positronium-potassium scattering

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorAdhikari, S. K.
dc.creatorMandal, P.
dc.date2014-05-20T14:08:06Z
dc.date2016-10-25T17:13:43Z
dc.date2014-05-20T14:08:06Z
dc.date2016-10-25T17:13:43Z
dc.date2001-04-28
dc.date.accessioned2017-04-05T21:44:14Z
dc.date.available2017-04-05T21:44:14Z
dc.identifierJournal of Physics B-atomic Molecular and Optical Physics. Bristol: Iop Publishing Ltd, v. 34, n. 8, p. 1361-1367, 2001.
dc.identifier0953-4075
dc.identifierhttp://hdl.handle.net/11449/23886
dc.identifierhttp://acervodigital.unesp.br/handle/11449/23886
dc.identifier10.1088/0953-4075/34/8/302
dc.identifierWOS:000168612400007
dc.identifierhttp://dx.doi.org/10.1088/0953-4075/34/8/302
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/868906
dc.descriptionScattering of positronium (Ps) by sodium and potassium atoms has been investigated employing a three-Ps-state coupled-channel model with Ps(ls,2s,2p) states using a time-reversal-symmetric regularized electron-exchange model potential fitted to reproduce accurate theoretical results for PsNa and PsK binding energies. We find a narrow S-wave singlet resonance at 4.58 eV of width 0.002 eV in the Ps-Na system and at 4.77 eV of width 0.003 eV in the Ps-K system. Singlet P-wave resonances in both systems are found at 5.07 eV of width 0.3 eV. Singlet D-wave structures are found at 5.3 eV in both systems. We also report results for elastic and Ps-excitation cross sections for Ps scattering by Na and K.
dc.languageeng
dc.publisherIop Publishing Ltd
dc.relationJournal of Physics B: Atomic, Molecular and Optical Physics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleS-, P- and D-wave resonances in positronium-sodium and positronium-potassium scattering
dc.typeOtro


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