title: Imaging the "missing" bands in the resonance-enhanced multiphoton ionization detection of methyl radical.
abstract: Three small features were uncovered in the (2+1) resonance-enhanced multiphoton ionization spectra of CD(3) produced from a crossed-beam reaction of F+CHD(3) near reaction threshold. Taking the velocity mapped images of these features revealed several well-resolved ringlike structures. By conservation of energy, these spectral features were unambiguously assigned to the "missing" bands of 1(1) (1), 3(1) (1), and 4(1) (1) in the literature. These assignments enable all four modes of excitation of this important radical being detected, which could have significant impact on future dynamics studies of the mode specificity of methyl radical.
authors.affiliation: Institute of Atomic and Molecular Sciences (IAMS), Academia Sinica, P.O. Box 23-166, Taipei 106, Taiwan.
authors.forename: Bailin
authors.initials: B
authors.lastname: Zhang
authors.forename: Jinghui
authors.initials: J
authors.lastname: Zhang
authors.forename: Kopin
authors.initials: K
authors.lastname: Liu
mesh_terms: D003198:Computer Simulation; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008697:Methane / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D036641:Microscopy, Fluorescence, Multiphoton / Q000379:methods*; D008956:Models, Chemical; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: C051224:methyl radical; D008697:Methane