Bimodal vibrational distribution of BaBr in the reaction Ba+CF3Br

• Toshiaki Munakata

  Institute of Physical and Chemical Research, Hirosawa, Wako, Saitama 351, Japan

• Takahiro Kasuya

  Institute of Physical and Chemical Research, Hirosawa, Wako, Saitama 351, Japan

抄録

Nascent vibrational distributions of BaBr were studied for the reaction Ba+CF3Br →BaBr+CF3. In a crossed beam configuration of supersonic CF3Br beam and effusive Ba beam, the product state distribution was measured by the laser induced fluorescence as a function of collision energy. The vibrational distribution of BaBr clearly showed a bimodal feature. At low collision energy, BaBr was produced preferentially around ν″=32, while at some higher collision energy, another vibrational component gained intensity at around ν″=15. The average vibrational energy of the higher vibrational component was about 80% of the total available energy, and that of the lower, about 35%. The bimodality of vibrational distribution indicates that the reaction Ba+CF3Br proceeds along two reaction pathways. In one pathway, Ba approaches in the direction of Br–CF3, and forms BaBr in low vibrational states. Whereas in the other, the atom approaches in the CF3–Br direction, and leads to a high vibrational excitation of BaBr. The branching ratio to the former pathway increases with collision energy.

収録刊行物

• The Journal of Chemical Physics

  The Journal of Chemical Physics 81 (12), 5608-5612, 1984-12-15

  AIP Publishing

キーワード

• Physical and Theoretical Chemistry
• General Physics and Astronomy

詳細情報

• CRID: 1363670319145211264
• NII論文ID: 30015682092
• DOI: 10.1063/1.447664
• ISSN: 10897690
• ISSN: 00219606
• Web Site: https://pubs.aip.org/aip/jcp/article-pdf/81/12/5608/18950742/5608_1_online.pdf
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