Molecular elimination of Br2 in 248 nm photolysis of bromoform probed by using cavity ring-down absorption spectroscopy

Hong Yi Huang, Wan Ting Chuang, Ramesh C. Sharma, Ching Yi Hsu, King Chuen Lin, Ching Han Hu

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The channel leading to Br2 molecular elimination in 248 nm photolysis of bromoform was observed using cavity ring-down spectroscopy. It was observed that since the ring-down time lasts 500 ns, the rotational population of the Br2 may not be of nascent nature. The vibrational population ratio of Br2(v=1)/Br2(v=0)=0.8±0.2 implied that the fragmented Br2 is vibrationally hot. It was found that the observed vibrationally hot Br2 fragment favors the dissociation pathway from high vibrational levels of the ground state.

Original languageEnglish
Pages (from-to)5253-5260
Number of pages8
JournalJournal of Chemical Physics
Issue number11
Publication statusPublished - 2004 Sep 15


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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