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Article: Laser spectroscopy of VS: Hyperfine and rotational structure of the C4∑--X4∑- transition

TitleLaser spectroscopy of VS: Hyperfine and rotational structure of the C4∑--X4∑- transition
Authors
Issue Date2003
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmsp
Citation
Journal Of Molecular Spectroscopy, 2003, v. 220 n. 1, p. 87-106 How to Cite?
AbstractThe (0,0) and (0,1) bands of the C4∑--X4∑- electronic transition of VS (near 809 and 846 nm, respectively) have been recorded at high resolution by laser-induced fluorescence, following the reaction of laser-ablated vanadium atoms with CS 2 under supersonic free-jet conditions. A least squares fit to the resolved hyperfine components of the rotational lines gives the rotational constants and bond lengths as C 4∑ -: B 0 = 0.188898 ± 0.000027 cm -1, r 0 = 2.1315 Å X 4∑ -: B 0 = 0.203684 ± 0.000025 cm -1, r 0 = 2.0526 Å. The electron spin parameters for the two states show that there are some similarities between the states of VS and those of VO, but the hyperfine parameters show that the compositions of the partly filled molecular orbitals are by no means the same. The ground state Fermi contact parameter of VS, b(X 4∑ -), is only 58% of that of the ground state of VO, which implies that the σ orbital of the ground σδ 2 electron configuration has less than 50% vanadium 4s character. Similarly, the excited state Fermi contact parameter, b(C 4∑ -), is very much smaller than that of VO. No local rotational perturbations have been found in the C 4∑ - state of VS, though an internal hyperfine perturbation between the F 2 and F 3 electron components at low N confuses the hyperfine structure and induces some forbidden (ΔJ = ±2) rotational branches. © 2003 Elsevier Science (USA). All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/148349
ISSN
2015 Impact Factor: 1.593
2015 SCImago Journal Rankings: 0.543
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorRan, Qen_HK
dc.contributor.authorTam, WSen_HK
dc.contributor.authorCheung, ASCen_HK
dc.contributor.authorMerer, AJen_HK
dc.date.accessioned2012-05-29T06:12:23Z-
dc.date.available2012-05-29T06:12:23Z-
dc.date.issued2003en_HK
dc.identifier.citationJournal Of Molecular Spectroscopy, 2003, v. 220 n. 1, p. 87-106en_HK
dc.identifier.issn0022-2852en_HK
dc.identifier.urihttp://hdl.handle.net/10722/148349-
dc.description.abstractThe (0,0) and (0,1) bands of the C4∑--X4∑- electronic transition of VS (near 809 and 846 nm, respectively) have been recorded at high resolution by laser-induced fluorescence, following the reaction of laser-ablated vanadium atoms with CS 2 under supersonic free-jet conditions. A least squares fit to the resolved hyperfine components of the rotational lines gives the rotational constants and bond lengths as C 4∑ -: B 0 = 0.188898 ± 0.000027 cm -1, r 0 = 2.1315 Å X 4∑ -: B 0 = 0.203684 ± 0.000025 cm -1, r 0 = 2.0526 Å. The electron spin parameters for the two states show that there are some similarities between the states of VS and those of VO, but the hyperfine parameters show that the compositions of the partly filled molecular orbitals are by no means the same. The ground state Fermi contact parameter of VS, b(X 4∑ -), is only 58% of that of the ground state of VO, which implies that the σ orbital of the ground σδ 2 electron configuration has less than 50% vanadium 4s character. Similarly, the excited state Fermi contact parameter, b(C 4∑ -), is very much smaller than that of VO. No local rotational perturbations have been found in the C 4∑ - state of VS, though an internal hyperfine perturbation between the F 2 and F 3 electron components at low N confuses the hyperfine structure and induces some forbidden (ΔJ = ±2) rotational branches. © 2003 Elsevier Science (USA). All rights reserved.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 VS: Hyperfine and rotational structure of the C4∑--X4∑- transitionen_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/S0022-2852(03)00095-Xen_HK
dc.identifier.scopuseid_2-s2.0-0041807882en_HK
dc.identifier.hkuros92776-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0041807882&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume220en_HK
dc.identifier.issue1en_HK
dc.identifier.spage87en_HK
dc.identifier.epage106en_HK
dc.identifier.isiWOS:000184076700010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridRan, Q=7007145640en_HK
dc.identifier.scopusauthoridTam, WS=7102605536en_HK
dc.identifier.scopusauthoridCheung, ASC=7401806538en_HK
dc.identifier.scopusauthoridMerer, AJ=6603864922en_HK

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