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Theoretical study of determining orientation and alignment of symmetric top molecule using laser-induced fluorescence

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Abstract

General expressions used for extracting the orientation and alignment parameters of a symmetric top molecule from laser-induced fluorescence (LIF) intensity are derived by employing the density matrix approach. The molecular orientation and alignment are described by molecular state multipoles. Excitation and detection are circularly and linearly polarized lights, respectively. In general cases, the LIF intensity is a complex function of the initial molecular state multipoles, the dynamic factors and the excitation-detection geometrical factors. It contains a population, ten orientation and fourteen alignment multipoles. The problem of how to extract the initial molecular state multipoles from the resolved LIF intensity is discussed.

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Authors and Affiliations

  1. State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China

    Cong Shulin, Han Keli & Lou Nanquan

  2. Physics Department, Dalian University of Technology, 116023, Dalian, China

    Cong Shulin & Han Keli

Authors
  1. Cong Shulin
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  2. Han Keli
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  3. Lou Nanquan
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Correspondence to Han Keli.

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Cong, S., Han, K. & Lou, N. Theoretical study of determining orientation and alignment of symmetric top molecule using laser-induced fluorescence. Sc. China Ser. B-Chem. 43, 485–495 (2000). https://doi.org/10.1007/BF02969494

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  • DOI: https://doi.org/10.1007/BF02969494

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