Skip navigation
Skip navigation

A comparative high-resolution study of predissociation linewidths in the Schumann-Runge bands of O2

Dooley, P.M.; Lewis, Brenton; Gibson, Stephen; Baldwin, Kenneth; Yoshino, K

Description

Results are presented of a comparative study in which three distinct high-resolution experimental techniques (vacuum-ultraviolet laser spectroscopy, laser-induced fluorescence spectroscopy and vacuum-ultraviolet Fourier-transform spectroscopy) were used to study predissociation in the Schumann-Runge bands of O2 B 3Σ⎯u(v′)←X 3Σ⎯g(v″) with v′=13 and 14. Our measurements are the first to be performed at high resolution for these levels and represent a significant advance on previous knowledge,...[Show more]

dc.contributor.authorDooley, P.M.
dc.contributor.authorLewis, Brenton
dc.contributor.authorGibson, Stephen
dc.contributor.authorBaldwin, Kenneth
dc.contributor.authorYoshino, K
dc.date.accessioned2022-06-23T05:00:10Z
dc.date.available2022-06-23T05:00:10Z
dc.identifier.issn0021-9606
dc.identifier.urihttp://hdl.handle.net/1885/267496
dc.description.abstractResults are presented of a comparative study in which three distinct high-resolution experimental techniques (vacuum-ultraviolet laser spectroscopy, laser-induced fluorescence spectroscopy and vacuum-ultraviolet Fourier-transform spectroscopy) were used to study predissociation in the Schumann-Runge bands of O2 B 3Σ⎯u(v′)←X 3Σ⎯g(v″) with v′=13 and 14. Our measurements are the first to be performed at high resolution for these levels and represent a significant advance on previous knowledge, characterizing completely the fine-structure and rotation dependencies of the B 3Σ⎯u(v=13 and 14)-state predissociation for the first time. The measured fine-structurespecific linewidths will result in significant improvements in the parameterization of models describing predissociation of the B-state and will have an impact on the development of realistic photochemical models of the terrestrial atmosphere. Good agreement was found between linewidths measured using vacuum-ultraviolet laser spectroscopy and laser-induced fluorescence spectroscopy, but unexpected difficulties arose in determining quantitative linewidths using vacuum-ultraviolet Fourier-transform spectroscopy. For each experimental technique, the instrumental resolution had to be carefully controlled and monitored in order to ensure reliable interpretation of the measured spectra.
dc.description.sponsorshipThe collaborative aspects of this research have been partially supported by reciprocal U.S.-Australian Cooperative Research Grants provided by the National Science Foundation ~U.S.! and the Department of Industry, Technology and Commerce ~Australia!. The measurements at SRI International were partially supported by grants from the Atmospheric Sciences Division of NSF and from the Stratospheric Chemistry Division of NASA. The measurements at the Photon Factory were supported in part by a NSF Division of Atmospheric Sciences Grant No. ATM-91-16552 to Harvard College Observatory, and by the NASA Upper Atmospheric Research Program under Grant No. NAG5-484 to the Smithsonian Astrophysical Observatory. We also acknowledge the support of the Paul Instrument Fund of the Royal Society for the development of the VUV-FT spectrometer. The FTS measurements were made with the approval of the Photon Factory Advisory Committee ~94G367!. K.Y. thanks the Japan Society for the Promotion of Science for support.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Institute of Physics (AIP)
dc.rights© 1998 American Institute of Physics (AIP)
dc.sourceJournal of Chemical Physics
dc.titleA comparative high-resolution study of predissociation linewidths in the Schumann-Runge bands of O2
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume109
dc.date.issued1998
local.identifier.absfor020500 - OPTICAL PHYSICS
local.identifier.absfor020600 - QUANTUM PHYSICS
local.identifier.absfor020200 - ATOMIC, MOLECULAR, NUCLEAR, PARTICLE AND PLASMA PHYSICS
local.identifier.ariespublicationU3488905xPUB18603
local.publisher.urlhttps://aip.scitation.org/
local.type.statusPublished Version
local.contributor.affiliationDooley, P.M., College of Science, ANU
local.contributor.affiliationLewis, Brenton, College of Science, ANU
local.contributor.affiliationGibson, Stephen, College of Science, ANU
local.contributor.affiliationBaldwin, Kenneth, College of Science, ANU
local.contributor.affiliationYoshino, K, Harvard-Smithsonian Center for Astrophysics
local.bibliographicCitation.issue10
local.bibliographicCitation.startpage3856
local.bibliographicCitation.lastpage3867
local.identifier.doi10.1063/1.476986
dc.date.updated2021-06-18T08:08:14Z
local.identifier.scopusID2-s2.0-0000761940
local.identifier.thomsonID000075719900016
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/9875..."The Published Version can be archived in an Institutional Repository. 12 months embargo" from SHERPA/RoMEO site (as at 22/06/2022). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (Dooley, P. M., et al. "A comparative high-resolution study of predissociation linewidths in the Schumann-Runge bands of O 2." The Journal of chemical physics 109.10 (1998): 3856-3867.) and may be found at https://dx.doi.org/10.1063/1.476986
CollectionsANU Research Publications

Download

File Description SizeFormat Image
1.476986.pdf315.57 kBAdobe PDFThumbnail


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator