Energy loss of energetic 40Ar, 84Kr, 197Au and 238U ions in mylar, aluminum and isobutane

The BigSol Superconducting Solenoid Beam Line at the Texas A&M Superconducting Cyclotron has been used to measure energy losses of 40Ar, 84Kr, 197Au and 238U ions in mylar, aluminum and isobutane at energies ranging from the Bragg peak up to several MeV/nucleon. The experimental data are compared with predictions from the SRIM code. In general experimental data for 40Ar and 84Kr are in agreement with model predictions whereas differences on the order of 10% are evidenced in some cases for 197Au and 238U ions especially at and around the Bragg peak energies.