O. Bjorneholm et al., Doppler splitting of in-flight anger decay of dissociating oxygen molecules: The localization of delocalized core holes, PHYS REV L, 84(13), 2000, pp. 2826-2829
By exploiting the core-excitation-induced dissociation of O-2, we find that
the Auger emission exhibits a Doppler-like energy shift. We show this to b
e a manifestation of localization of the core hole and propose that the pro
blem of core-hole localization versus delocalization in core-hole spectrosc
opies may be resolved by considering the nature of the measurement.