Skip navigation
Skip navigation

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

Dooley, P. M.; Lewis, B. R.; Gibson, S. T.; Baldwin, Kenneth; Cosby, P. C.; Price, J. L.; Copeland, R. A.; Slanger, T. G.; Thorne, A. P.; Murray, J. E.; 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, B. R.
dc.contributor.authorGibson, S. T.
dc.contributor.authorBaldwin, Kenneth
dc.contributor.authorCosby, P. C.
dc.contributor.authorPrice, J. L.
dc.contributor.authorCopeland, R. A.
dc.contributor.authorSlanger, T. G.
dc.contributor.authorThorne, A. P.
dc.contributor.authorMurray, J. E.
dc.contributor.authorYoshino, K.
dc.date.accessioned2018-12-11T04:21:49Z
dc.date.available2018-12-11T04:21:49Z
dc.identifier.issn0021-9606
dc.identifier.urihttp://hdl.handle.net/1885/154644
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.format.extent1 vol.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.sourceThe Journal of Chemical Physics
dc.titleA comparative high-resolution study of predissociation linewidths in the Schumann-Runge bands of O2
dc.typeJournal article
local.description.notesAuthor's Pre-print: green tick author can archive pre-print (ie pre-refereeing) Author's Post-print: green tick author can archive post-print (ie final draft post-refereeing) Publisher's Version/PDF: grey tick subject to Restrictions below, author can archive publisher's version/PDF
local.identifier.citationvolume109
dc.date.issued1998
local.type.statusPublished Version
local.contributor.affiliationKenneth Baldwin. Research School of Physics and Engineering.
local.bibliographicCitation.issue10
local.bibliographicCitation.startpage3856
local.bibliographicCitation.lastpage3867
local.identifier.doi10.1063/1.476986
dcterms.accessRightsOpen Access
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