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Kim H, Dooley KS, Johnson ER, et al. Photodissociation of the BrO radical using velocity map ion imaging: excited state dynamics and accurate D0(0)(BrO) evaluation. J Chem Phys. 2006;124(13):134304doi: 10.1063/1.2173265.
Kim, H., Dooley, K. S., Johnson, E. R., & North, S. W. (2006). Photodissociation of the BrO radical using velocity map ion imaging: excited state dynamics and accurate D0(0)(BrO) evaluation. The Journal of chemical physics, 124(13), 134304. https://doi.org/10.1063/1.2173265
Kim, Hahkjoon, et al. "Photodissociation of the BrO radical using velocity map ion imaging: excited state dynamics and accurate D0(0)(BrO) evaluation." The Journal of chemical physics vol. 124,13 (2006): 134304. doi: https://doi.org/10.1063/1.2173265
Kim H, Dooley KS, Johnson ER, North SW. Photodissociation of the BrO radical using velocity map ion imaging: excited state dynamics and accurate D0(0)(BrO) evaluation. J Chem Phys. 2006 Apr 07;124(13):134304. doi: 10.1063/1.2173265. PMID: 16613452.
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J Chem Phys. 2006 Apr 07;124(13):134304. doi: 10.1063/1.2173265.

Photodissociation of the BrO radical using velocity map ion imaging: excited state dynamics and accurate D0(0)(BrO) evaluation.

The Journal of chemical physics

Hahkjoon Kim, Kristin S Dooley, Elizabeth R Johnson, Simon W North

Affiliations

  1. Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA.

PMID: 16613452 DOI: 10.1063/1.2173265

Abstract

We have studied the photodissociation dynamics of expansion-cooled BrO radical both above (278-281.5 nm) and below (355 nm) the A (2)Pi(3/2) state threshold using velocity map ion imaging. A recently developed late-mixing flash pyrolytic reactor source was utilized to generate an intense BrO radical molecular beam. The relative electronic product branching ratios at 355 nm and from 278 to 281.5 nm were determined. We have investigated the excited state dynamics based on both the product branching and the photofragment angular distributions. We find that above the O((1)D(2)) threshold the contribution of the direct excitation to states other than the A (2)Pi(3/2) state and the role of curve crossing is considerably larger in BrO compared to that observed for ClO, in agreement with recent theoretical studies. The measurement of low velocity photofragments resulting from photodissociation just above the O((1)D(2)) threshold provides an accurate and direct determination of the A (2)Pi(3/2) state dissociation threshold of 35418+/-35 cm(-1), leading to a ground state bond energy of D(0)(0)(BrO)=55.9+/-0.1 kcal/mol.

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