众所周知,碘在制备高感感光乳剂中起着十分重要的作用。它改变卤化银微晶的颗粒分布,增加卤化银微晶的晶格缺陷,促进卤化银微晶中的潜影的生成和起正空穴陷阱的作用。一些作者利用介电损耗法考查了溴碘化银乳剂中碘的含量对卤化银微晶的离子电导率和表面空间电荷层的性质的影响。但直到目前对于在一给定碘含量的多分散乳剂中,碘 It is well known that iodine plays a very important role in the preparation of highly sensitive emulsions. It changes the particle distribution of the silver halide crystallites, increases the lattice defects of the silver halide crystallites, promotes the formation of latent images in the silver halide crystallites and functions as positive hole traps. Some authors used dielectric loss measurements to examine the effect of iodine content in silver bromoiodide emulsions on the ionic conductivity of silver halide crystallites and the nature of the surface space charge layer. However, until now, for polydisperse emulsions at a given iodine content, iodine