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  Photofragment orientation as a probe of near-threshold non-adiabatic phenomena in the photodissociation of ICN

Black, J. F., Hasselbrink, E., Waldeck, J. R., & Zare, R. N. (1990). Photofragment orientation as a probe of near-threshold non-adiabatic phenomena in the photodissociation of ICN. Molecular Physics, 71(5), 1143-1153. doi:10.1080/00268979000102381.

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 Creators:
Black, J. F.1, 2, Author
Hasselbrink, Eckart2, 3, Author              
Waldeck, J. R. 2, 4, Author
Zare, R. N.2, Author
Affiliations:
1Continuum, 3150 Central Expressway, Santa Clara, California 95051, U.S.A. , ou_persistent22              
2Department of Chemistry, Stanford University, Stanford, California 94305, U.S.A., ou_persistent22              
3Fritz Haber Institute, Max Planck Society, ou_24021              
4Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, U.S.A. , ou_persistent22              

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 Abstract: Cyanogen iodide (ICN) is photodissociated at 249 nm. The CN(X 2Σ+, v = 2) fragments are probed by sub-Doppler laser-induced fluorescence (LIF) using circularly polarized light, which allows resolution of the F1(J = N + ½) and F2(J = N - ½) spin-rotation doublets. These components are shown to be oriented, i.e. to possess a non-statistical non-centrosymmetric MJ quantum-state distribution. The sign and magnitude of the orientation vary between components and are shown to have some correlation with the energetic threshold for production of the I(2P1/2) spin-orbit state. These observations are briefly discussed in the context of breakdown of the Born-Oppenheimer approximation in this system.

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Language(s): eng - English
 Dates: 1990-05-181990-06-141990
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1080/00268979000102381
 Degree: -

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Title: Molecular Physics
  Other : Mol. Phys.
Source Genre: Journal
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Publ. Info: London : Taylor & Francis
Pages: 11 Volume / Issue: 71 (5) Sequence Number: - Start / End Page: 1143 - 1153 Identifier: ISSN: 0026-8976
CoNE: https://pure.mpg.de/cone/journals/resource/954925264211