Global fittings of (NNO)-N-14-N-15-O-16 and (NNO)-N-15-N-14-O-16 vibrational-rotational line positions using the effective Hamiltonian approach

作者：Tashkun S A^*; Perevalov V I; Kochanov R V; Liu A W; Hu S M

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2010, 111(9): 1089-1105.

DOI：10.1016/j.jqsrt.2010.01.010

• Nitrous oxide isotopologues
• (NNO)-N-14-N-15-O-16
• (NNO)-N-15-N-14-O-16
• Microwave
• Infrared
• Global modeling
• HITRAN

An effective Hamiltonian built up to sixth order in the Amat-Nielsen ordering scheme describing all rovibrational energy levels in the ground electronic state and containing in explicit form all resonance interaction terms due to the approximate relations between harmonic frequencies omega(1) approximate to 2 omega(2) and omega(3) approximate to 4 omega(2) was applied to model the observed rovibrational line positions (collected from the literature) of (NNO)-N-14-N-15-O-16 and (NNO)-N-15-N-14-O-16 isotopologues of nitrous oxide. For (NNO)-N-14-N-15-O-16, 124 effective Hamiltonian parameters were fitted to near 28 000 observed line positions covering the 0.88860 cm(-1) spectral range. The RMS of the weighted fit is 0.00126 cm(-1) and dimensionless standard deviation is 1.48. For (NNO)-N-15-N-14-O-16, 121 effective Hamiltonian parameters were fitted to more than 31 000 observed line positions covering the same spectral interval. The RMS of the weighted fit is 0.00185 cm(-1) and dimensionless standard deviation is 1.85. In both cases the models describe all available line positions with precision compatible to the measurement uncertainties. A number of local resonance perturbations was found and discussed. Among these perturbations there are interpolyad resonance Coriolis interactions. A comparison of HITRAN-2008 data with the calculations based on the fitted models is presented.

• 出版日期2010-6
• 单位中国科学技术大学