MODELING THE VUV EMISSION-SPECTRUM OF N-2 - PRELIMINARY-RESULTS ON THE EFFECTS OF ROTATIONAL INTERACTIONS ON LINE-INTENSITIES

A theoretical model of the excited singlet ungerade electronic states of the nitrogen molecule is presented. This work is an extension of a previous study (D. Stahel, M. Leoni and K. Dressler, J. Chem. Phys. 79 , 2541-2558, 1983) with the addition of rotational interactions betwee n states of different symmetry. These rotational interactions together with the homogeneous couplings frequently lead to extreme mixing of t he states. This model is being used to analyse the high resolution vac uum ultraviolet emission spectrum which is currently being recorded ph otoelectrically. The ultimate goal of this work is the reliable interp retation of the low resolution emission spectra observed from planetar y atmospheres, notably that of Titan, and the transitions assigned as being important in the Voyager 1 spectra of Titan are discussed in det ail.