The interaction between charged particles and matter has been the focus of physicists' attention for over a hundred years. Niels Bohr, Enrico Fermi and many others have contributed to this field fundamental for physics, but also for industrial fields such as nuclear, space photovoltaics, or electronics. Today, the time for models is gone and realistic calculations are now carried out using supercomputers.

We propose to use our time-dependent quantum-mechanical computer code to simulate precisely and without experimental input, the energy loss of fast ions in condensed matter. This quantity is called the stopping power.

In particular, our attention will be focused on the materials and ions for which we know that empirical models fail. Our contribution with numerical simulations will be crucial for our experimental collaborators.