Energy loss of MeV heavy ions in carbon

Abstract A novel technique, using secondary forward recoil ions generated in thin standard targets by energetic very heavy primany ion beam, has been employed to measure energy loss of several ion species (Z 1 = 8 to 29) covering energies between 0.1 and 1.0 MeV/u. Energy variation was simp y affected by changing the detector angle between 35° to 70°, avording the dominant elastic scattering of the primary beam. A twin detector permitted simultaneous measurement of both unabsorted and absorbed spectra. The experimental data on stopping power are compared with evaluated values using LSS theory and TRIM. A better understanding of the validity of available theoretical evaluations has become possible, with a need for higher precision in experimental data in some cases.