Chemical Hypersensitization of Infra-Red Emulsions

Paper presented at a Symposium on “Photography in Astronomy” organized by the Science Committee of The Royal Photographic Society on 8 December 1975, in London.

Abstract

It is shown that hypersensitization of an emulsion spectrally sensitized to the infra-red is a consequence of an increase in the silver-ion concentration in the grain environment. Hypersensitization leads to an increase in the overall efficiency of silver production, reduces low-intensity reciprocity failure, and increases the efficiency of spectral sensitization. Possible mechanisms of the effect are discussed.

Notes

Paper presented at a Symposium on “Photography in Astronomy” organized by the Science Committee of The Royal Photographic Society on 8 December 1975, in London.