Okumura, Mitchio and Chan, Man-Chor and Oka, Takeshi (1989) High-Resolution Infrared Spectroscopy of Solid Hydrogen: The Tetrahexacontapole-Induced ΔJ=6 Transitions. Physical Review Letters, 62 (1). pp. 32-35. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:OKUprl89
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Weak new features in the absorption spectrum of solid hydrogen were observed by high-resolution infrared spectroscopy, and assigned as transitions with total change in angular momentum of ΔJ=6. The tetrahexacontapole (64-pole)-induced rotational transition W_0(0) was studied with a difference frequency laser spectrometer and found to be very narrow, with a linewidth of 0.003 cm^-1 HWHM in 99.8% parahydrogen. Frequencies, linewidths, and integrated absorption strengths were measured for several pure rotational and rotation-vibration transitions from 1800 to 7000 cm^-1, and the tetrahexacontapole moment was determined.
|Additional Information:||©1988 The American Physical Society Received 16 September 1988 This work was supported by the U.S. Air Force Astronautic Laboratory, Edwards Air Foce Base, CA (Contract No. F04611-86-K-0069). We would like to thank B. D. Rehfuss, L. W. Xu, and W. Kreiner for their assistance in the difference frequency laser experiments, M. Freed for computaitons, and R. H. Tipping and K. N. Rao for kindly providing preprints. M.C.C. acknowledges support from the United College of the Chinese University of Hong Kong.|
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