Energy loss of MeV/n heavy ions in dense hydrogen plasmas

We present the experimental and theoretical work done at Orsay on the analysis of MeV/n ion beams interacting with fully ionized and neutral hydrogen targets. The obtained results have demonstrated a strong enhancement in the plasma of the deposition of energy and of the dispersion in the distribution of the beam energy. The recently derived CKLT stopping formula has been compared favourably with the experimental results.