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Title: Reaction dynamics of V(a {sup 4}F{sub J})+NO{yields}VO(X {sup 4}{sigma}{sup -})+N studied by a crossed-beam laser-induced fluorescence technique

The dynamics of the reaction, V(a {sup 4}F{sub J})+NO{yields}VO(X {sup 4}{sigma}{sup -})+N was studied by using a crossed-beam technique at 16.4 kJ/mol of collision energy. The V atomic beam was generated by laser vaporization and crossed with the O{sub 2} beam at a right angle. The laser-induced fluorescence (LIF) for the transition of VO(B {sup 4}{pi}-X {sup 4}{sigma}) was used to determine the rotational state distribution of the reaction product in the vibrational ground state. Almost pure V(a {sup 4}F{sub J}) beam was obtained by using the mixture of NH{sub 3} with N{sub 2} as a carrier gas. Comparing the LIF spectra of VO measured for two carrier gases, i.e., NH{sub 3}/N{sub 2} and pure N{sub 2}, it was concluded that the vibrational ground state of VO(X {sup 4}{sigma}{sup -}) is formed almost entirely from the reaction of V(a {sup 4}F{sub J}) and the contribution of the metastable V(a {sup 6}D{sub J}) is negligible. The observed rotational distribution was similar to a statistical prior prediction, and suggested that the title reaction proceeds via a long-lived intermediate, which is consistent with an electron transfer mechanism.
Authors:
; ; ;  [1]
  1. Department of Material Science, University of Hyogo, 3-2-1 Kohto, Kamigori, Hyogo 678-1297 (Japan)
Publication Date:
OSTI Identifier:
20783292
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 124; Journal Issue: 20; Other Information: DOI: 10.1063/1.2202315; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMMONIA; ATOM-MOLECULE COLLISIONS; CHARGE EXCHANGE; COLLIDING BEAMS; ELECTRON TRANSFER; EVAPORATION; FLUORESCENCE; GROUND STATES; LASERS; PHOTOCHEMISTRY; ROTATIONAL STATES; VANADIUM; VANADIUM OXIDES; VIBRATIONAL STATES