Abstract
Ejected-electron spectra of molecular autoionisation resulting from Li++He collisions have been measured for the observation angles from 30 degrees to 150 degrees and for the Li+ impact energies below 2.5 keV. A satellite peak is observed and explained as due to the interference of the probability amplitudes from two matching points in electronic state energies before and after the autoionisation. Spectral narrowing with increase in angle is observed and explained in terms of the Doppler effect. A new interference effect is suggested regarding a spectral structure in the high energy wings at backward emissions.
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