Busarow, Kerry L. and Blake, Geoffrey A. and Laughlin, K. B. and Cohen, R. C. and Lee, Y. T. and Saykally, R. J. (1988) Tunable far infrared laser spectroscopy of van der Waals bonds: Extended measurements on the lowest Sigma bend of ArHCl. Journal of Chemical Physics, 89 (3). pp. 1268-1276. ISSN 0021-9606 http://resolver.caltech.edu/CaltechAUTHORS:BUSjcp88
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A tunable far infrared laser system has been used to measure the vibration–rotation spectrum of the lowest Sigma bending state of ArHCl near 24 cm^−1 in a cw planar jet operating with a terminal jet temperature near 3 K. Over 60 transitions have been observed for both 35Cl and 37Cl isotopes with resolution of the quadrupole hyperfine structure. An improved set of molecular parameters was determined, including B, D, H, and eqQ for both upper and lower states. Very narrow linewidths (approximately 300 kHz) resulting in high resolution and sensitivity make this technique a powerful new method for the detailed investigation of intermolecular forces.
|Additional Information:||Copyright © 1988 American Institute of Physics. Received 23 February 1988; accepted 18 April 1988. This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Chemical Sciences Division of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. The FIR laser system was funded by the National Science Foundation (Grant No. CHE-8612296). [G.A.B. was a] Berkeley Miller Postdoctoral Fellow.|
|Subject Keywords:||INFRARED SPECTRA, VAN DER WAALS FORCES, ADDUCTS, ARGON, HYDROCHLORIC ACID, VIBRATIONAL STATES, ROTATIONAL STATES, MOLECULAR STRUCTURE, ARGON COMPLEXES, INTERMOLECULAR FORCES, MOLECULAR CLUSTERS, INFRARED SPECTRA|
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|Deposited On:||24 Jun 2008|
|Last Modified:||26 Dec 2012 10:08|
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