STUDY ON SOME CHARACTERISTICS OF NUCLEAR EMULSIONS

The paper describes the variation of some characteristics of the nuclear emulsion such assensitivity, fog density and latent image stability influenced by adding ascorbic acid into the fi-nished emulsion N-4. A comparative study of latent image stability is made between Fuji ET-7Bnuclear emulsion and our's under different temperature and relative humidity. The result indi-cates that the addition of ascorbic acid obviously improves the latent image stability of the emul-sion N-4. The Fuji ET-7B emulsion and the emulsion N-4 containing ascorbic acid have similar la-tent image fading quality at lower temperature while the Japanese sample does better at roomtemperature.