Journal article
Multiphoton dissociation dynamics of the indenyl radical at 248 nm and 193 nm.
Erin N Sullivan, Bethan Nichols, Stephen von Kugelgen, Gabriel da Silva, Daniel M Neumark
Journal of Chemical Physics | AIP Publishing | Published : 2019
DOI: 10.1063/1.5121294
Abstract
Photofragment translational spectroscopy is used to investigate the unimolecular photodissociation of the indenyl radical (C9H7). C9H7 radicals are generated by photodetachment of C9H7- anions and are dissociated at 248 nm (5.00 eV) and 193 nm (6.42 eV). The following product channels are definitively observed at both wavelengths: C2H2 + C7H5, C2H2 + C3H3 + C4H2, and C2H2 + C2H2 + C5H3. The three-body product channels are energetically inaccessible from single photon excitation at either dissociation wavelength. This observation, in combination with calculated dissociation rates and laser power studies, implies that all dissociation seen in this experiment occurs exclusively through multipho..
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Grants
Awarded by Australian Research Council
Funding Acknowledgements
This research was supported by the Director, Office of Basic Energy Science, Chemical Sciences Division of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, the Australian Research Council Future Fellowship program under Grant No. FT130101304, and the National Institutes of Health under Grant No. S10OD023532. The authors would also like to thank Mark Shapero and Isaac Ramphal for access to previous results regarding C7H5 and C5H5 dissociation as well as for several fruitful discussions.