甲酸根掺杂立方体溴碘化银微晶乳剂的增感效应研究

使用反馈式微机控制双注仪,在晶体生长不同时期,依次加入不同量碘盐和一定量甲酸盐,制得了两个系列的溴碘化银乳剂:一系列为碘含量分别为乳剂颗粒总银量的0、2×10^-2、3×10^-2、4×10^-2和5×10^-2I^-mol/Ag mol的溴碘化银颗粒乳剂;另一系列为碘含量与上述系列乳剂相同,并掺杂有1×10^-4mol/Ag mol甲酸根的溴碘化银颗粒乳剂.对其感光性能的测试结果表明,经过化学敏化和光谱增感后,甲酸根掺杂的溴碘化银乳剂较未掺杂甲酸根的乳剂,感光度显著提高,在一定量的I^-掺杂范围内(0-4×10^-2I^-mol/Ag mol),灰雾没有明显增加.

Sensitization on Cubic AgBrI Emulsion Doped with Formate

By using of the double-jet apparatus controlled by a microcomputer,different amounts of iodide salt and a certain amount of formate were doped in AgBr crystal in different periods of the crystal growth to prepare two series of cubic AgBrI emulsion: a series of formate-undoped AgBrI grain emulsions which contained 0,2×10-2,3×10-2,4×10-2,5×10-2 I-mol/Ag mol iodide ions respectively,another series of formate-doped AgBrI grain emulsions doped with 1×10-4 mol/Ag mol formate,which contained the same quantities of iodide ions as former,respectively.The sensitometric results from these emulsions showed that the sensitivities of formate-doped AgBr/I emulsions,relative to those of the corresponding formate-undoped ones as the controlled,regardless of whether they were sensitized chemically and spectrally,were remarkably increased,while in a certain amount of iodide-doping range(0—4×10-2 I-mol/Ag mol),fog level of those were not remarkably improved.