Abstract
Angular distributions of photoelectrons emitted from oriented CO molecules were measured using a new method: mass and angle-resolved photoelectron-photoion coincidence spectroscopy. Along with the angular momentum composition of the photoelectron wave, the experiment reveals pronounced forward-backward asymmetries in the photoemission intensity with respect to the molecular orientation. This asymmetry, being observed for the first time in molecular photoionization, is interpreted in terms of multiple scattering effects. Calculations using the method show good quantitative agreement with the presented experimental results.
- Received 19 March 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.2435
©1997 American Physical Society