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碘溴化银乳剂薄片颗粒的潜影分散与碘离子在颗粒中的分布有关。本文用交叉光楔曝光技术测定了由次潜影造成的潜影分散,并根据所测出的潜影分散度和乳剂的表面感光度,对内、表敏的分布作了分析。结果表明,碘离子分布在颗粒边缘的乳剂,其表面潜影分散度要比碘离子均匀分布的颗粒更甚,后者且表现出内、表敏度竞争的现象。
The distribution of the latent image of iodine bromide silver bromide flake particles is related to the distribution of iodide ions in the particles. In this paper, the cross-wedge exposure technique was used to determine the latent image dispersal caused by the sub-latent images. The distribution of the internal and external sensitizers was analyzed based on the measured latent image dispersions and the surface sensitivities of the emulsions. The results showed that the emulsion with iodide ions distributed on the edge of the particle had more surface latent image dispersion than the particles with uniform distribution of iodide ions, and the latter showed the competition of the internal and the external sensitivities.