Die Winkelabhängigkeit der Resonanzstreuung niederenergetischer Elektronen an N 2

摘要: Results of scattering experiments with monochromatic electrons in the energy range from a few tenth an eV to about 16 are reported. Below 1.8 collision no resonance structures have been found either total (transmitted current) or elastic and inelastic differential cross sections. The resonances above measured channels (up vibrational quantum numberν=8 N2-molecule) angular 10° 110°. In channelsν≧2 especially first peak appears asymmetric, as predicted by calculations associated Franck-Condon-factors. all dependence (due pure scattering) shows maxima at 0° 90° minimum around 55°, probably indicating gerade-symmetry N 2 − -state. Excitation functions three states N2 were between their thresholds (between 11 12 eV) 15 eV, one them showing several new structures.