Experimental and theoretical analysis of the 5pnp J = O-e, 1(e), 2(e) autoionizing spectrum of Sr

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dc.contributor.authorCohen, S.en
dc.contributor.authorAymar, M.en
dc.contributor.authorBolovinos, A.en
dc.contributor.authorKompitsas, M.en
dc.contributor.authorLuc-Koenig, E.en
dc.contributor.authorMereu, H.en
dc.contributor.authorTsekeris, P.en
dc.date.accessioned2015-11-24T18:28:49Z
dc.date.available2015-11-24T18:28:49Z
dc.identifier.issn1434-6060-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16189
dc.rightsDefault Licence-
dc.subjectlaser optogalvanic spectroscopyen
dc.subjecteigenchannel r-matrixen
dc.subjectquantum-defect theoryen
dc.subjectrydberg seriesen
dc.subjectbariumen
dc.subjectstatesen
dc.subjectthresholden
dc.subjectstrontiumen
dc.subjectcalciumen
dc.subjectbaen
dc.titleExperimental and theoretical analysis of the 5pnp J = O-e, 1(e), 2(e) autoionizing spectrum of Sren
heal.abstractThe even parity 5pnp J = 0, 1 and 2 doubly excited autoionizing states of strontium were investigated both experimentally and theoretically. Sr atoms in an atomic beam were excited through the two-step isolated Core Excitation (ICE) scheme 5s(2) S-1(o) -lambda (1) --> 5sn'p P-1(1) (n' = 12-16) -lambda (2) --> [5p(3/2)np](J). The final ICE transition probes the [5p(3/2)np](J) resonances. However, the [5p(1/2)np](J) series below the 5p(1/2) threshold were excited also due to their mixing with the [5p(3/2)np](J) perturbers. An extended energy region was covered below and above the 5p(1/2) ionization limit by saturating the central ICE lobe and recording as many as possible "red" and "blue" secondary lobes. J identification was achieved by using mutually parallel and perpendicular linear polarizations of the laser beams. The ICE spectra were compared to those obtained by employing a two-step excitation scheme using the bound 4d5p P-1(1) valence state as an intermediate one. Final identification for very complex structures was achieved after comparison with theoretical energy level positions and excitation profiles produced by the R-matrix method combined with the multichannel quantum defect theory (MQDT) method. The agreement between theoretical and observed structures is quite satisfactory.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1007/s100530170263-
heal.identifier.secondary<Go to ISI>://000166830400002-
heal.identifier.secondaryhttp://link.springer.com/content/pdf/10.1007%2Fs100530170263.pdf-
heal.journalNameEuropean Physical Journal Den
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2001-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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