Energy-loss distributions of 50–250-keV protons traversing thin solid foils: Determination of the skewness coefficient and influence of foil roughness
- 1 October 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 36 (8) , 3715-3718
- https://doi.org/10.1103/physreva.36.3715
Abstract
From new measurements of energy-loss distributions of proton beams in thin solid foils we determine the second- and third-order moments of the energy spectra, and evaluate the skewness coefficient γ, which is of interest in studying the asymmetry of the energy-loss spectra. We present calculations of γ based on electron gas and Thomas-Fermi models; we compare these calculations with the experimental results and with the values derived from Bohr’s energy-loss treatment. We present a theoretical analysis of the effects of surface roughness on the skewness of the energy-loss distributions.Keywords
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