Determination of capture cross sections and trap depths of dominant centres in AgCl microcrystals doped with [Ru(CN)(6)](4-) complexes

Both intrinsic centres and [Ru(CN)(6)](4-) associated centres were studied at 120 K in AgCl microcrystals with and without [Ru(CN)(6)](4-) dopant, by the transient microwave photoconductivity technique. The densities, capture cross sections and lower limits of the nap depths of the dominant intrinsi c centres in AgCl microcrystals can be estimated by a careful comparison be tween the experimental and simulated transient microwave photoconductivity in the reference emulsion. It has been shown that, by studying the transien t microwave photoconductivity of a silver halide emulsion system with long response rimes (e.g. AgCl microcrystals homogeneously doped with [Ru(CN)(6) ](4-)), not only the capture cross section and trap depth of the [Ru(CN)(6) ](4-) related centres, but also the trap depth of the intrinsic centres can be more accurately determined. In this way, a new possible method to deter mine the trap depths of intrinsic centres in silver halides was suggested.