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 language | English (US) |
|---|---|
| Pages (from-to) | 2310-2313 |
| Number of pages | 4 |
| Journal | Journal of Physical Chemistry |
| Volume | 93 |
| Issue number | 6 |
| State | Published - 1989 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
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 journal › Article
}
TY - JOUR
T1 - Laser-induced fluorescence of jet-cooled IBr
T2 - B3Π0+ ← X1Σ+ excitation spectra
AU - Stephenson, Thomas A.
AU - Simpson, William R.
AU - Wright, Julie R.
AU - Schneider, Henry P.
AU - Miller, Joshua W.
AU - Schultz, Karen E.
PY - 1989
Y1 - 1989
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=5644232001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=5644232001&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:5644232001
VL - 93
SP - 2310
EP - 2313
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
SN - 0022-3654
IS - 6
ER -