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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 2
BKCSDE 32(2)
February 20, 2011

Title	Dynamics of Br(²P_j ) Formation in the Photodissociation of Bromobenzene
Author	Dababrata Paul, Hyun Kook Kim, Kiryong Hong, Tae Kyu Kim*
Keywords	Photodissociation dynamics, Aryl halides, Ion-imaging
Abstract	The photodissociation dynamics of bromobenzene near 234 nm has been investigated using a two-dimensional photofragment ion-imaging technique coupled with a state-selective [2+1] resonance-enhanced multiphoton ionization (REMPI) scheme. The nascent Br atoms are produced by the primary C-Br bond dissociation, which leads to the formation of C₆H₅ (X% ) and Br(²P_j , j = 1/2, 3/2). The observed translational energy distributions have been fitted by a single Boltzmann function and two Gaussian functions. Trimodal translational energy distributions of Br(²P_j ) have been assigned to the direct/indirect dissociation mechanisms originating from the initially excited ³(π,π*) state. The assignments have been confirmed by the recoil anisotropy and distribution width corresponding to the individual components.
Page	659 - 663
Full Text	PDF

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