A procedure of the chemical sensitization rate checking of AgCl emulsion microcrystals

摘要

It is difficult to study the influence of chemical sensitization on a photosensitivity of AgCl microcrystals for microcrystals of size less then 0.5 #mu# m because of low intrinsic sensitivity of silver chloride. However, it is doubtless, that the Ag_2S and Ag_nAu sensitivity centers change a microcrystals surface state and their sensitometric properties. Especially the surface influence is appear by use of small microcrystals (<0,2 #mu# m), where a surface/volume ratio much grows, and the superficial properties of micro-crystals determine a photoprocess efficiency. Emulsion AgCl microcrystals with d<0,2 #mu# m are widely used in high resolution photomaterials (phototechnical, aero-hpotographic films, etc.). Therefore the control of chemical sensitization efficiency for these micro-crystals is important.