Abstract
We studied three-dimensional angular distributions and longitudinal momentum spectra of electrons ejected in transfer plus ionization (TI), i.e., the ejection of one and the capture of a second target electron, for ion-helium collisions. We observe a pronounced structure strongly focused opposite to the projectile beam direction, which we associate with a new correlated TI mechanism proposed recently. This process contributes significantly to the total cross sections over a broad range of perturbations , even at as large as 0.5, where uncorrelated TI mechanisms were thought to be dominant.
- Received 20 October 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.043202
© 2012 American Physical Society