A discharge-flow photoionization mass-spectrometric study of the BrO (X 2Π) radical. Photoionization spectrum and ionization energy

✍ Scribed by P.S. Monks; L.J. Stief; M. Krauss; S.C. Kuo; R.B. Klemm

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 427 KB
• Volume: 211
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)87083-f

✦ Synopsis

The photoionization spectrum of BKI was measured over the wavelesgth range 1= 106-122 nm using a discharge-flow photoionization mass spectrometer apparatus coupled to a synchrotron radiation source FJrO was generated by the reaction of O('P) atoms with molecular bromine. A value of 10.46 z!z 0.02 eV was obtained for the adiabatic ionization energy of BrO from photoion thresholds, corresponding to the B&+(X 32-)tBrO(X2113,2) transition. Spectra for both the 7yBrO and "'BrO isotopes were very similar and the resultant photoion thresholds were identical, within experimental uncertainty. The structure observed in the spectra is discussed in terms of available states for BrO+, which have been calculated using MC-SCF methods.