Energy-Loss-Straggling Experiments with Relativistic Heavy Ions in Solids

Abstract
Energy-loss straggling measurements performed at the high-momentum-resolution magnetic spectrometer FRS with bare and highly charged 8O, 54Xe, 79Au, and 92U ions with specific kinetic energies (700–1000) MeV/u are reported. The results are in good agreement with rigorous calculations recently reported by Lindhard and Sørensen and reveal systematic deviations from the well-known relativistic Bohr formula, which was obtained within the framework of the first-order Born approximation.

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