Polarized laser induced fluorescence of BaO (X 1Σ +) produced in a crossed-beam reaction of Ba+SO2

Atsushi Nakajima, Toshiaki Munakata, Takashi Nagata, Tamotsu Kondow, Takahiro Kasuya

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2 Citations (Scopus)


Rotational alignment of the product BaO in the crossed-beam reaction Ba+SO2 → BaO+SO was studied as a function of collision energy. The collision energy was varied from 3.0 to 8.0 kcal/mol by changing the stagnation condition of the supersonic SO2 beam. The rotational alignment was probed by means of the polarized laser-induced fluorescence (PLIF) of the product. The distribution of the rotational vector was isotropic at the collision energy of 3.0 kcal/mol, but anisotropic at a higher collision energy, with the most probable alignment being perpendicular to the relative velocity vector. These results indicate that the reaction proceeds via a long-lived complex at a low collision energy, whereas at a higher collision energy, the lifetime of the complex is short enough to couple the rotational angular momentum to the total angular momentum.

Original languageEnglish
Pages (from-to)991-996
Number of pages6
JournalThe Journal of Chemical Physics
Issue number2
Publication statusPublished - 1992

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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