Theoretical Demonstration of the Feasibility of Observing Vortices in the Ejected Electron Spectrum in Bare-Ion – Two-Elect...

Using a fully correlated, 4-dimensional lattice, time-dependent Schrödinger equation (LTDSE) model of the collisions of bare projectile ions with two-electron atoms (H+, He2+ + He), we demonstrate the existence vortices in the resulting spectrum of ejected electrons. Following the uncovering of these features in collisions involving only one electron (H+ + H) [Macek et al., Phys. Rev. Lett. 102, 143201 (2009)], this demonstration provides impetus for seeking these features in more readily feasible experimental conditions using a cold helium target and the reaction microscope technique.