Lines intensities in the n 4 band of NH3 at low temperature
S. Nouri*, M. Dhib, H. Aroui
Laboratoire de Physique Moléculaire, Ecole Supérieure des Sciences et Techniques de Tunis,
5 avenue Taha Hussein,1008 Tunis,Tunisia
* Corresponding author . E-mail : email@example.com
Received : 05 December 2003;revised version accepted : 21 April 2004
Line intensities in the n 4 band of NH3 have been measured at low temperature (235 K) for some selected lines in the PP and RP-branches of n 4 band using a high resolution Fourier transform spectrometer. These line intensities were obtained using the method of multispectrum fitting to the measured shapes of the lines. The J and K quantum numbers dependencies are discussed. The analysis of the results yields effective transition moments and vibrational band strengths of the symmetric and antisymmetric components of the n 4 band.
Keywords: Intensities; Temperature; Ammonia.