关键词: 甲酸根, 掺杂, 溴碘化银, 增感效应

Abstract: 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 emuls ions showed that the sensitivities of formate-doped AgBr/I emulsions,relative to those of the corresponding formate-undoped on esas the controlled,regardless of whether they were sensitized chemically and spectrally,were remarkably increased,while in a certain amount of iodid-edopin grange (0-4×10^-2 I^- mol/Ag mol),fog level of those were not remarkably improved.

Key words: formate, doped, AgBr/I, sensitization