The relative sensitivities of autoradiographic emulsions to negative chemography

Nuclear emulsions from Ilford, Kodak (U.K.), Eastman Kodak and Sakura have been exposed under comparable conditions to sections known to cause negative chemography. Kodak AR-10 and Eastman Kodak NTB-2 and NTB-3 emulsions did not show negative chemography. Ilford K5, K2 and L4 and Sakura NR-M2 showed varying degrees of chemography. The results suggest a correlation between mean crystal diameter and susceptibility to this artefact.