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Ground State Ro-inversional Transitions of 15NH3 in the Far-Infrared Region

✍ Scribed by S. Urban; S. Klee; K.M.T. Yamada

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 287 KB
Volume: 168
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1994.1287

No coin nor oath required. For personal study only.

✦ Synopsis

The high-resolution FIR spectrum of ({ }^{15} \mathrm{NH}_{3}) has been measured in natural abundance by the Fourier-transform spectrometer at Giessen, Germany in the wavenumber range from 30 to 120 (\mathrm{cm}^{-1}). The accurate experimental line positions (estimated error of (0.00006 \mathrm{~cm}^{-1}) ) of the ground state rotation-inversion transitions of this isotopomer, which have been obtained from a line profile analysis, were fitted by the effective rotational Hamiltonian expressed in the conventional polynomial way, as well as in the Padé form. The high accuracy of the transition wavenumbers has been confirmed by the standard deviations of our fits of 0.000040 and (0.000038 \mathrm{~cm}^{-1}) obtained with the polynomial and Padé forms, respectively. A better extrapolation capability of the Padé approximant has been demonstrated. 1994 Academic Press. Inc.

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