Lowest Excitation Energy of 9Be

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dc.contributor.authorStanke, Monika
dc.contributor.authorKedziera, Dariusz
dc.contributor.authorBubin, Sergiy
dc.contributor.authorAdamowicz, Ludwik
dc.contributor.institutionSchool of Sciences and Humanities
dc.date.accessioned2016-02-01T05:25:01Z
dc.date.available2016-02-01T05:25:01Z
dc.date.issued2007
dc.description.abstractVariational calculations employing explicitly correlated Gaussian functions and explicitly including the nuclear motion [i.e., without assuming the Born-Oppenheimer (BO) approximation] have been performed to determine the lowest singlet transition energy in the 9Be atom. The non-BO wave functions were used to calculate the 2 relativistic corrections ( 1=137:035 999 679). With those corrections and with the 3 and 4 QED corrections determined previously by others, we obtained 54 677:35 cm 1 for the 31S ! 21S transition energy. This result falls within the error bracket for the experimental transition of 54 677:26 10 cm 1. This is the first time an electronic transition of Be has been calculated from first principles with the experimental accuracy
dc.identifier.citationStanke, M., Kędziera, D., Bubin, S., & Adamowicz, L. (2007). Lowest excitation energy of Be 9. Physical review letters, 99(4), 043001.
dc.identifier.doihttps://doi.org/10.1103/PhysRevLett.99.043001
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/1128
dc.language.isoen
dc.publisherAmerican Physical Society
dc.rightsMetadata only
dc.sourcePhysical review letters, 99(4).
dc.subjectPhysics
dc.subject9Be atom
dc.subjectBorn-Oppenheimer approximation
dc.titleLowest Excitation Energy of 9Be
dc.typeArticle

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