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dc.contributor.authorLin, Yen-Chengen_US
dc.contributor.authorLee, Chinen_US
dc.contributor.authorLee, Shih-Huangen_US
dc.contributor.authorLee, Yin-Yuen_US
dc.contributor.authorLee, Yuan T.en_US
dc.contributor.authorTseng, Chien-Mingen_US
dc.contributor.authorNi, Chi-Kungen_US
dc.date.accessioned2018-08-21T05:53:20Z-
dc.date.available2018-08-21T05:53:20Z-
dc.date.issued2018-02-21en_US
dc.identifier.issn0021-9606en_US
dc.identifier.urihttp://dx.doi.org/10.1063/1.5016059en_US
dc.identifier.urihttp://hdl.handle.net/11536/144568-
dc.description.abstractPhenol is an important model molecule for the theoretical and experimental investigation of dissociation in the multistate potential energy surfaces. Recent theoretical calculations [X. Xu et al., J. Am. Chem. Soc. 136, 16378 (2014)] suggest that the phenoxyl radical produced in both the X and A states from the O-H bond fission in phenol can contribute substantially to the slow component of photofragment translational energy distribution. However, current experimental techniques struggle to separate the contributions from different dissociation pathways. A new type of time-resolved pump-probe experiment is described that enables the selection of the products generated from a specific time window after molecules are excited by a pump laser pulse and can quantitatively characterize the translational energy distribution and branching ratio of each dissociation pathway. This method modifies conventional photofragment translational spectroscopy by reducing the acceptance angles of the detection region and changing the interaction region of the pump laser beam and the molecular beam along the molecular beam axis. The translational energy distributions and branching ratios of the phenoxyl radicals produced in the X, A, and B states from the photodissociation of phenol at 213 and 193 nm are reported. Unlike other techniques, this method has no interference from the undissociated hot molecules. It can ultimately become a standard pump-probe technique for the study of large molecule photodissociation in multistates. Published by AIP Publishing.en_US
dc.language.isoen_USen_US
dc.titleExcited-state dissociation dynamics of phenol studied by a new time-resolved techniqueen_US
dc.typeArticleen_US
dc.identifier.doi10.1063/1.5016059en_US
dc.identifier.journalJOURNAL OF CHEMICAL PHYSICSen_US
dc.citation.volume148en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000425808000020en_US
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