title: Photodissociation dynamics of the tert-butyl radical via photofragment translational spectroscopy at 248 nm.
abstract: The photodissociation dynamics of the tert-butyl radical (t-C(4)H(9)) were investigated using photofragment translational spectroscopy. The tert-butyl radical was produced from flash pyrolysis of azo-tert-butane and dissociated at 248 nm. Two distinct channels of approximately equal importance were identified: dissociation to H + 2-methylpropene, and CH(3) + dimethylcarbene. Neither the translational energy distributions that describe these two channels nor the product branching ratio are consistent with statistical dissociation on the ground state, and instead favor a mechanism taking place on excited state surfaces.
authors.affiliation: Department of Chemistry, University of California, Berkeley, CA 94720, USA.
authors.forename: Bogdan
authors.initials: B
authors.lastname: Negru
authors.forename: Gabriel M P
authors.initials: GM
authors.lastname: Just
authors.forename: Dayoung
authors.initials: D
authors.lastname: Park
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Neumark