Bawendi, M. G. and Rehfuss, B. D. and Dinelli, B. M. and Okumura, M. and Oka, T. (1989) Observation and analysis of the nu3 band of NH3+. Journal of Chemical Physics, 90 (11). pp. 5910-5917. ISSN 0021-9606 http://resolver.caltech.edu/CaltechAUTHORS:BAWjcp89
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The nu3 degenerate vibration–rotation band of the ammonia cation NH3+ was observed and analyzed. The spectrum was detected in direct absorption using a tunable difference frequency spectrometer combined with velocity modulation. The ion was produced in a 6 kHz ac discharge with a gas mixture of He:H2:NH3 (~250:8:1) and with a total pressure of ~6 Torr. Spin–rotation splittings for most Q-branch transitions were well resolved and spin–rotation interaction constants were determined. A symmetric rotor Hamiltonian with A1–A2 splittings and l resonance was used to analyze the spectrum. The spectral pattern indicates that NH3+ is a planar molecular with D3h symmetry, consistent with a 2A"2 ground electronic state.
|Additional Information:||Copyright © 1989 American Institute of Physics. Received 14 September 1988; accepted 3 January 1989. This work was supported by NSF Grant No. PHY-87-07025. [M.G.B.] was an AT&T Bell Laboratories, PhD. Scholar.|
|Subject Keywords:||AMMONIA, CATIONS, MOLECULAR IONS, INFRARED SPECTRA, VIBRATIONAL STATES, ROTATIONAL STATES, SPECTRAL FUNCTIONS, ENERGY−LEVEL SPLITTING|
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|Deposited On:||09 Oct 2008 05:35|
|Last Modified:||26 Dec 2012 10:23|
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