Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5416061 | Journal of Molecular Spectroscopy | 2006 | 10 Pages |
Abstract
Emission spectra of the b1Σ+(b0+) â X3Σâ(X10+,X21) and a1Î(a2) â X21 transitions of AsBr have been measured in the near-infrared spectral region with a Fourier-transform spectrometer. The arsenic bromide radicals were generated in fast-flow systems by reaction of arsenic vapor (Asx) with bromine and were excited by microwave-discharged oxygen. The most prominent features in the spectrum are the Îv = +1,0,â1, and â2 band sequences of the b1Σ+(b0+) â X3Σâ(X10+) transition in the range 11 700-12 700 cmâ1. With lower intensities, the Îv = 0 and â1 sequences of the b1Σ+(b0+) â X3Σâ(X21) sub-system show up in the same range. Further to the red, between 6000 and 6700 cmâ1, the Îv = 0, +1, and â1 sequences of the hitherto unknown a1Î(a2) â X21 transition are observed. Analyses of medium- and high-resolution spectra have yielded improved molecular constants for the X10+, X21, and b0+ states and first values of the electronic energy and the vibrational constants of the a2 state.
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Authors
K.D. Setzer, M. Beutel, E.H. Fink,