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Article: Laser spectroscopy of VO: Analysis of the rotational and hyperfine structure of the C4Σ--X4Σ- (0, 0) band

TitleLaser spectroscopy of VO: Analysis of the rotational and hyperfine structure of the C4Σ--X4Σ- (0, 0) band
Authors
Issue Date1982
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmsp
Citation
Journal Of Molecular Spectroscopy, 1982, v. 91 n. 1, p. 165-208 How to Cite?
AbstractThe (0, 0) band of the C 4Σ --X 4Σ - electronic transition of VO was recorded by intermodulated laser-induced fluorescence at a resolution of about 100 MHz over the range 17 300-17 427 cm -1. The hyperfine structure caused by the 51V nucleus (I = 7 2) is almost completely resolved, and provides good examples of case (b βJ) coupling in both electronic states. Internal hyperfine perturbations between the F 2 and F 3 electron spin components (where N = J - 1 2 and J + 1 2, respectively) occur in both electronic states; these are caused by hyperfine matrix elements of the type ΔJ = ±1, and induce hundreds of extra hyperfine lines which permit the courses of the electron spin and hyperfine levels to be followed in detail. In the band center observations of Q lines, center dips and transitions with ΔF ≠ ΔJ have allowed the hyperfine and electron spin constants for the two electronic states to be determined separately despite the parallel polarization of the electronic transition. Numerous local electronic-rotational perturbations occur in the C 4Σ - state, which have required that the line positions be corrected for their effects before meaningful centrifugal distortion constants could be obtained. The C 4Σ - state also suffers from large spin-orbit perturbations by distant electronic states, for which it has been necessary to introduce a second spin-rotation parameter, γ S, following the formalism of Brown and Milton. The corresponding isotropic hyperfine parameter b S is also required. Both γ S and b S result from third-order cross-terms involving the spin-orbit interaction; given sufficient resolution they are always needed in a full description of electronic states of quartet and higher multiplicity. © 1982.
Persistent Identifierhttp://hdl.handle.net/10722/147710
ISSN
2015 Impact Factor: 1.593
2015 SCImago Journal Rankings: 0.543
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCheung, ASCen_HK
dc.contributor.authorHansen, RCen_HK
dc.contributor.authorMerer, AJen_HK
dc.date.accessioned2012-05-29T06:08:50Z-
dc.date.available2012-05-29T06:08:50Z-
dc.date.issued1982en_HK
dc.identifier.citationJournal Of Molecular Spectroscopy, 1982, v. 91 n. 1, p. 165-208en_HK
dc.identifier.issn0022-2852en_HK
dc.identifier.urihttp://hdl.handle.net/10722/147710-
dc.description.abstractThe (0, 0) band of the C 4Σ --X 4Σ - electronic transition of VO was recorded by intermodulated laser-induced fluorescence at a resolution of about 100 MHz over the range 17 300-17 427 cm -1. The hyperfine structure caused by the 51V nucleus (I = 7 2) is almost completely resolved, and provides good examples of case (b βJ) coupling in both electronic states. Internal hyperfine perturbations between the F 2 and F 3 electron spin components (where N = J - 1 2 and J + 1 2, respectively) occur in both electronic states; these are caused by hyperfine matrix elements of the type ΔJ = ±1, and induce hundreds of extra hyperfine lines which permit the courses of the electron spin and hyperfine levels to be followed in detail. In the band center observations of Q lines, center dips and transitions with ΔF ≠ ΔJ have allowed the hyperfine and electron spin constants for the two electronic states to be determined separately despite the parallel polarization of the electronic transition. Numerous local electronic-rotational perturbations occur in the C 4Σ - state, which have required that the line positions be corrected for their effects before meaningful centrifugal distortion constants could be obtained. The C 4Σ - state also suffers from large spin-orbit perturbations by distant electronic states, for which it has been necessary to introduce a second spin-rotation parameter, γ S, following the formalism of Brown and Milton. The corresponding isotropic hyperfine parameter b S is also required. Both γ S and b S result from third-order cross-terms involving the spin-orbit interaction; given sufficient resolution they are always needed in a full description of electronic states of quartet and higher multiplicity. © 1982.en_HK
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmspen_HK
dc.relation.ispartofJournal of Molecular Spectroscopyen_HK
dc.titleLaser spectroscopy of VO: Analysis of the rotational and hyperfine structure of the C4Σ--X4Σ- (0, 0) banden_HK
dc.typeArticleen_HK
dc.identifier.emailCheung, ASC:hrsccsc@hku.hken_HK
dc.identifier.authorityCheung, ASC=rp00676en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/0022-2852(82)90039-X-
dc.identifier.scopuseid_2-s2.0-0001579203en_HK
dc.identifier.volume91en_HK
dc.identifier.issue1en_HK
dc.identifier.spage165en_HK
dc.identifier.epage208en_HK
dc.identifier.isiWOS:A1982MY67200014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCheung, ASC=7401806538en_HK
dc.identifier.scopusauthoridHansen, RC=24517867700en_HK
dc.identifier.scopusauthoridMerer, AJ=6603864922en_HK

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