Laser-induced fluorescence of jet-cooled IBr: B3Π0+ ← X1Σ+ excitation spectra

Thomas A. Stephenson, William R. Simpson, Julie R. Wright, Henry P. Schneider, Joshua W. Miller, Karen E. Schultz

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The laser-induced fluorescence excitation spectrum of the B ← X transition in IBr seeded in a He supersonic free jet expansion has been recorded. The (1,0), (2,0), and (3,0) transitions are observed with sufficient signal-to-noise to extract the relative fluorescence quantum yields for the v′ = 1, 2, and 3 vibrational levels. All three levels are found to undergo predissociation to some degree, in contrast to the case of ICl, in which the v′ = 1 level in the B state appears stable with respect to dissociation. These differences are discussed in light of the available curve-crossing parameters. No evidence is found in the laser-induced fluorescence excitation spectra for transitions associated with the NeIBr van der Waals complex, possibly due to rapid relaxation mechanisms.

Original languageEnglish (US)
Pages (from-to)2310-2313
Number of pages4
JournalJournal of Physical Chemistry
Volume93
Issue number6
StatePublished - 1989
Externally publishedYes

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laser induced fluorescence
Fluorescence
Lasers
excitation
free jets
Quantum yield
dissociation
fluorescence
expansion
curves

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Stephenson, T. A., Simpson, W. R., Wright, J. R., Schneider, H. P., Miller, J. W., & Schultz, K. E. (1989). Laser-induced fluorescence of jet-cooled IBr: B3Π0+ ← X1Σ+ excitation spectra. Journal of Physical Chemistry, 93(6), 2310-2313.

Laser-induced fluorescence of jet-cooled IBr : B3Π0+ ← X1Σ+ excitation spectra. / Stephenson, Thomas A.; Simpson, William R.; Wright, Julie R.; Schneider, Henry P.; Miller, Joshua W.; Schultz, Karen E.

In: Journal of Physical Chemistry, Vol. 93, No. 6, 1989, p. 2310-2313.

Research output: Contribution to journalArticle

Stephenson, TA, Simpson, WR, Wright, JR, Schneider, HP, Miller, JW & Schultz, KE 1989, 'Laser-induced fluorescence of jet-cooled IBr: B3Π0+ ← X1Σ+ excitation spectra', Journal of Physical Chemistry, vol. 93, no. 6, pp. 2310-2313.
Stephenson TA, Simpson WR, Wright JR, Schneider HP, Miller JW, Schultz KE. Laser-induced fluorescence of jet-cooled IBr: B3Π0+ ← X1Σ+ excitation spectra. Journal of Physical Chemistry. 1989;93(6):2310-2313.
Stephenson, Thomas A. ; Simpson, William R. ; Wright, Julie R. ; Schneider, Henry P. ; Miller, Joshua W. ; Schultz, Karen E. / Laser-induced fluorescence of jet-cooled IBr : B3Π0+ ← X1Σ+ excitation spectra. In: Journal of Physical Chemistry. 1989 ; Vol. 93, No. 6. pp. 2310-2313.
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