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Kazuhiko Ohashi, Yasuhiro Nakai, Nobuyuki Nishi, "Photodissociation Mechanisms of Benzene Cluster Ions on the Excitation With hv = 0.5-3.0 eV", Laser Chemistry, vol. 15, Article ID 051561, 19 pages, 1995. https://doi.org/10.1155/1995/51561
Photodissociation Mechanisms of Benzene Cluster Ions on the Excitation With hv = 0.5-3.0 eV
The photodissociation of mass-selected benzene cluster ions, , is studied to elucidate the dynamics of dissociation and the mechanism of fragmentation. For , the average translational energy and the angular distributions of the photofragments are measured as a function of photon energy (hv). The photoexcitation to an upper bound state with hv = 2.81 eV results in statistical energy disposal. Regardless of the excitation to a dissociative state with hv = 1.17-1.62 eV, only a small fraction (at most 10%) of the available energy is partitioned into the translation. For with n = 5-8, the average number of neutral molecules ejected following photoexcitation increases linearly with increasing hv until is reached as the product. The result suggests that the photofragmentation proceeds via the sequential evaporation of neutral monomers rather than the direct ejection of a neutral cluster.
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