Experimental and theoretical results on electron emission in collisions   between He targets and dressed Li$^{q+}$ (q=1,2) projectiles
  We investigate experimentally and theoretically the electron emission in collisions between He atoms and Li$^{q+}$ (q=1,2) projectiles at intermediate-high incident energies. We report on measured absolute values of double differential cross-sections, as a function of the emitted electron energy and angle, at a collision energy of 440~keV/u. The different contributions from target-ionisation, projectile-ionisation, and simultaneous target-projectile ionisation are calculated with the quantum-mechanical Continuum Distorted Wave and Continuum Distorted Wave -- Eikonal Initial State models, and with Classical Trajectory Monte Carlo simulations. There is an overall good agreement of the calculations with the experimental data for electron emission cross-sections. 
D. Fregenal, J. M. Monti, J. Fiol, P. D. Fainstein, R. D. Rivarola, G.   Bernardi, S. Su\'arez
physics.atom-ph