Abstract
We report the first measurement on vibrationally resolved electron momentum spectroscopy of by using a high-resolution (, ) spectrometer. The vibrational-specific experimental momentum profiles have been obtained and shown to be in agreement with calculations of (, ) ionization cross sections taking into account the vibrational wave functions. Distinct deviations from Franck-Condon predictions have been observed in vibrational ratios of cross sections, which can readily be ascribed to the Young-type two-center interference. Unlike previous (, ) work, the present observation of an interference effect does not rely on the comparison with the one-center atomic cross section.
- Received 6 May 2012
DOI:https://doi.org/10.1103/PhysRevLett.112.023204
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