Double ionization of Helium by bare Coulombic projectiles. Generalized Sturmian Functions and Approximate three body solutions.

E. GAGGIOLI, M.J. AMBROSIO, S. OTRANTO, D.M. MITNIK, AND G. GASANEO

Metz

Conferencia; International Conference on Many Particle Spectroscopy of Atoms, Molecules and Surfaces; 2014

We present an ab-initio calculation for thedouble ionization of Helium by proton impact. A Helium target is impactedwith a fast proton with an incident energy of700 keV. The momentum transfer to the target isnear unity, which puts the kinematics outside thedipolar regime. The cited study relies on the us-age of approximate wavefunctions for the initialand nal channels, and the authors present suc-cessive improvements of the interelectronic cor-relation. Their study is carried out under a FirstBorn scheme for the projectile interaction withthe target.