| Résumé | We calculate vibronic transition moments for the � 2 A1-X~ 2 B1 electronic band system, and for the vibrational transitions within the � and X~ states, of the NH2 free radical with the purpose of assisting in the quantitative interpretation of cometary NH2 emission spectra. To do this it is necessary to use molecular wavefunctions, and electric dipole moment and transition moment surfaces. The wavefunctions are obtained using our program system RENNER after we have determined optimized � and X~ state potential energy surfaces in a fitting to data. We have obtained the electric dipole moment and transition moment surfaces by ab initio calculation. |
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