Comment on the Abstraction of Mean Excitation Energies from Experimental Reduced Stopping Powers.

摘要

Consider the uncertainties attendant on the abstraction of mean excitation energies from experimental stopping power data. The imprecision in the higher order Born expansion terms (e.g. Barkas and Bloch corrections) and, the deviation from asymptotic First Born approximation behavior (the shell corrections) make it impossible to determine experimental mean excitation energies with precision better than about 5 eV for Al. Reprints. (jhd)