An experimental method for precise determination of electronic stopping powers for heavy ions

A new technique has been developed for the determination of heavy-ion stopp ing powers by combining the Doppler shift attenuation (DSA) and transmissio n methods. This technique offers a possibility to measure stopping powers o f bulk materials for heavy ions over a wide velocity range. The validity of the new method was demonstrated by measuring the stopping powers of SiO2, Si, ZrO2, Zr, Al2O3 and Al for Si-29 ions at velocities 1.0-5.0v(0). Consid erable deviations from Bragg rule were observed in the calculated contribut ions of the oxygen stopping powers for different oxides. (C) 2000 Elsevier Science B.V. All rights reserved.