A comparison of sulfur sensitization on silver bromide and silver iodobromide emulsions

In emulsion literature, it has been stated that silver iodobromide emulsions can be sensitized more efficiently than pure silver bromide. 20 Recently, work has been published comparing the two emulsion types, using single jet emulsions with high internal versus surface sensitivity. Tani found that when the internal / surface sensitivity ratio increased because of the addition of iodide, the ratio of sulfur sensitization also increased. 5 This showed that the increase in sensitivity upon chemical sensitization was greater for the iodobromide emulsion, and can be explained by the lower sensitivity of the unsensitized silver iodobromide. In this experiment, internal sensitivity will be minimized by using a monodisperse, double jet procedure during emulsion precipitation, and the surface sensitivity will be studied before and after sulfur sensitization