Millimeter-wave spectrum of BrCN produced by dc discharge |
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Authors: | Pradeep Risikrishna Varadwaj |
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Institution: | Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064, India |
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Abstract: | Ground state (v=0) and first excited state (v=1) millimeter-wave rotational absorption spectra of cyanogen bromide (BrCN) and some of its isotopic species, have been investigated in the frequency region: 40.0-75.0 GHz using a source-modulated millimeter-wave spectrometer. Millimeter-wave radiation has been produced using a frequency multiplier, the fundamental radiation source being klystrons. BrCN has been produced by applying a dc glow discharge through a mixture of 3-bromobenzonitrile and trifluoromethylbromide (CF3Br) at low pressure. The quadrupole hyperfine structure of 81Br and 79Br have been resolved, measured, and analyzed. Finally, internuclear distances of BrCN have been determined. |
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Keywords: | Millimeter-wave spectroscopy Cyanogen bromide (BrCN) Discharges Molecular structure |
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