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Issue 4, 2010
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A laser induced fluorescence study relating to physical properties of the iodine monoxide radical

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Abstract

The dispersed fluorescence spectra originating from the v = 2 and v = 0 levels of the A2Π3/2 state of iodine monoxide (IO) have been recorded for the first time after laser induced fluorescence (LIF) excitation in the A2Π3/2 ← X2Π3/2 electronic transition. The results are used to obtain relative Franck–Condon factors for various vv′′ transitions in the A2Π3/2 → X2Π3/2 system up to v′′ = 12 and compared with theoretical predictions. A fluorescence quenching study of the A2Π3/2 state of IO has also been performed, revealing that collisional quenching and rotational energy transfer (RET) are rapid in the A2Π3/2 state of IO. The J′-dependence to fluorescence quenching of the A2Π3/2 (v = 2) state of IO by N2 suggests a collisional predissociation mechanism.

Graphical abstract: A laser induced fluorescence study relating to physical properties of the iodine monoxide radical

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Publication details

The article was received on 29 May 2009, accepted on 23 Oct 2009 and first published on 24 Nov 2009


Article type: Paper
DOI: 10.1039/B910571A
Citation: Phys. Chem. Chem. Phys., 2010,12, 823-834
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    A laser induced fluorescence study relating to physical properties of the iodine monoxide radical

    T. J. Gravestock, M. A. Blitz and D. E. Heard, Phys. Chem. Chem. Phys., 2010, 12, 823
    DOI: 10.1039/B910571A

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