Abstract
For the calculation of stopping power and ranges with the method suggested by Bethe, functions expressing the binding of the electrons in the atoms (``shell corrections'') are needed. Here, shell corrections calculated with hydrogenic wave functions have been employed. By using experimental atomic energy levels as parameters for them, I have found good agreement between experimental and calculated values of stopping power for elements with atomic number Z>56. Only for the mean ionization energy I there was no simple relation to atomic properties, and a considerable dependence of the Bloch parameter b=I/Z on Z has been found. Calculated values of stopping power and ranges agree with experimental values for protons with kinetic energies T above 0.5 MeV, for ions (with z protons and M\ensuremath{\le}40 nucleons) above T/M\ensuremath{\sim}(z-1.5) MeV, well within the uncertainty of the experiments, but an approximately 1% discrepancy for several hundred MeV protons remains.
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