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2 -
2 AND
2 +
4 -
2 HOT BANDS of 14NH3 IN THE 5 TO 8 µm REGION.
C. COTTAZ, I. KLEINER, G. TARRAGO, Laboratoire de Photophysique Moléculaire, Université Paris Sud, France; AND L. R. BROWN, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109.
To complete our infrared analyses of 14NH3 between 5 and 8 µm, a region dominated by the absorption of the 2
2 overtone and
4 fundamental bands, we have also modeled the 3
2 -
2 and
2 +
4 -
2 hot band line positions and intensities measured at 0.005 cm-1 resolution with the Fourier transform spectrometer located at the Kitt Peak National Observatory. Using the 3
2 and
2 +
4 upper states energy obtained previously, several hundred line positions with J up to 10 have been assigned to 3
2 (s) -
2 (a), 3
2 (a) -
2 (s),
2 +
4 (s) -
2 (s) and
2 +
4 (a) -
2 (a) located at 1416., 1963., 1608. and 1618. cm-1 respectively. Selected intensity measurements have been modeled as well. Finally, comparisons of measured self-broadened line widths from these hot bands to corresponding values in the overtone and fundamental bands have revealed that the hot band line widths are smaller by factors of 0.8 to 0.4; these differences vary according to the quantum numbers.