The Stopping Power of Ilford C₂ Emulsion

Abstract

The stopping power of Ilford C₂ nuclear emulsion under fixed water content conditions has been determined for protons in the energy range 1.73-5.26 MeV. with an accuracy of 1 per cent. The variation of stopping power with water content has been calculated and an appropriate correction applied. It has been found that the values obtained in this experiment are in substantial agreement with those of Lattes, Fowler, and Cuer, and of Rotblat, A consistency in stopping power of better than 0.3 per cent. has been observed between several batches. Some data on the straggling of protons in nuclear emulsion are presented.