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The 12 micron band of ethane: A spectral catalog from 765 cm(-1) to 900 cm(-1)The high resolution laboratory absorption spectrum of the 12 micro band of ethane gas is studied. The data were obtained using the McMath Solar Telescope 1 meter Fourier Transform interferometer at Kitt Peak National Observatory and tunable diode laser spectrometers at the University of Tennessee and NASA/Goddard Space Flight Center. Over 200 individual vibration rotation transitions were analyzed taking into account many higher order effects including torsional splitting. Line positions were reproduced to better than 0.001/cm. Both ground and upper state molecular constants were determined in the analysis. The experimental details, the analysis procedures and the results are addressed. A list of ethane transitions occurring near (14)CO2 laser lines needed for heterodyne searches for C2H6 in extraterrestrial sources is also included. A spectral catalog of the ethane nu sub g fundamental from 765/cm to 900/cm is provided. A high dispersion (1/cm 12 in.) plot of both the Kitt Peak interferometric data and a simulated spectrum with Doppler limited resolution, a table of over 8500 calculated transitions listed quantum number assignments, frequencies and intensities are provided.
Document ID
19840011425
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Atakan, A. K. (Tennessee Univ. Greenbelt, MD, United States)
Blass, W. E. (Tennessee Univ. Greenbelt, MD, United States)
Brault, J. W. (Tennessee Univ. Greenbelt, MD, United States)
Daunt, S. J. (Tennessee Univ. Greenbelt, MD, United States)
Halsey, G. W. (NASA Goddard Space Flight Center)
Jennings, D. E. (NASA Goddard Space Flight Center)
Reuter, D. C. (NASA Goddard Space Flight Center)
Susskind, J. (NASA Goddard Space Flight Center)
Date Acquired
September 4, 2013
Publication Date
November 1, 1983
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
NAS 1.15:85108
NASA-TM-85108
Accession Number
84N19493
Funding Number(s)
CONTRACT_GRANT: NAS5-26896
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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