Investigation of the energy loss of heavy ions in a hydrogen plasma

The energy loss of heavy ions in a hydrogen plasma has been measured at the Heavy Ion Accelerator UNILAC (GSI) by time-of-flight method. All types of ions had an energy of 1.4 MeV/u; their atomic number varied from 20 to 92, their effective charge from 13 to 33. The energy loss of the ions 40 C Ca13+, 74Ge18+, 84Kr18+, 110Pd26+, 208Pb30+ and 238U33+ has been determined. The plasma target was a linear Z pinch electric discharge plasma. The energy loss oscillates during the plasma lifetime (100 μsec), showing three maxima and considerably higher values than the ion energy loss measured in cold hydrogen gas, the heaviest elements showing the highest losses. (orig./AH)