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. doi:10.1063/1.456356. https://resolver.caltech.edu/CaltechAUTHORS:BAWjcp89
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Abstract
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.
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| 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. | |||||||||
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| Subject Keywords: | AMMONIA, CATIONS, MOLECULAR IONS, INFRARED SPECTRA, VIBRATIONAL STATES, ROTATIONAL STATES, SPECTRAL FUNCTIONS, ENERGY−LEVEL SPLITTING | |||||||||
| Issue or Number: | 11 | |||||||||
| DOI: | 10.1063/1.456356 | |||||||||
| Record Number: | CaltechAUTHORS:BAWjcp89 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:BAWjcp89 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 11901 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Archive Administrator | |||||||||
| Deposited On: | 09 Oct 2008 05:35 | |||||||||
| Last Modified: | 08 Nov 2021 22:22 |
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