@article{10272/5421,
year = {2005},
month = {3},
url = {http://hdl.handle.net/10272/5421},
abstract = {We report here theoretical values for the transition moments of an extensive set of vibrational
bands in the electronic ground state of 14NH3. For selected bands, we have further made detailed
simulations of the rotational structure. The calculations are carried out by means of recently
developed computational procedures for describing the nuclear motion and are based on a high-
level ab initio potential energy surface, and high-level dipole moment surfaces, for the electronic
ground state of NH3. The reported theoretical intensity values are compared to, and found to agree
very well with, corresponding experimental results. It is believed that the computational method, in
conjunction with high-quality ab initio potential energy and dipole moment surfaces, can simulate
rotation-vibration spectra of XY3 pyramidal molecules prior to observation with su±cient accuracy
to facilitate the observation of these spectra. By degrading the accuracy of selected elements of the
calculations, we have also investigated the in°uence of customary approximations on the computed
intensity values.},
publisher = {American Institute of Physics},
keywords = {Análisis espectral},
keywords = {Vibración},
keywords = {Correlated molecular calculations},
keywords = {Microwave double-resonance},
keywords = {Laser stark spectroscopy},
keywords = {Gaussian-basis sets},
keywords = {Vibrational system},
title = {Dipole moment and intensities in the electronic ground state of NH3: Bridging the gap between ab initio theory and spectroscopic experiment},
author = {Yurchenko, Sergei N. and Carvajal Zaera, Miguel and Thiel, W. and Lin, Hain and Jensen, Per},
}