Stopping power of heavy ions in hot dense plasmas

Energy loss of 6 MeV/u Fe-56 ions in a partially ionized helium plasma. has been for tile first time measured as a function of incident charge state r anging from 21+ to 25+. Enhancement of the energy loss of the ions in the d ischarge plasma has been observed over that in cold helium gas. The enhance d stopping of O-16 ions with energies of similar to 0.2 MeV/u in laser abla ted LiH plasma. has been also observed over that in cold matter. Theoretica l calculation proposed by Sigmund reproduces the energy dependence of the e xperimental stopping power of the O-16 ions in the plasma.