Abstract.
The slowing-down process of point-like charged particles in matter has been investigated by measuring the energy straggling for antiprotons and protons in Al, Ni and Au. A comparison with binary theory shows good agreement for Al and Au. For Ni, experimental data are not as convincing. In particular for the aluminum target, the Barkas-like effect of reduced energy straggling for antiprotons compared to protons is visible in the experimental data and a nearly velocity-proportional straggling is found, in good agreement with binary theory.
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Møller, S., Csete, A., Ichioka, T. et al. Antiproton and proton energy loss straggling at keV energies. Eur. Phys. J. D 46, 89–92 (2008). https://doi.org/10.1140/epjd/e2007-00314-3
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DOI: https://doi.org/10.1140/epjd/e2007-00314-3