草酸根掺杂板状溴碘化银颗粒乳剂的增感效应研究

使用反馈式微机控制双注乳化仪,在晶体生长过程中一定时间内,加入一定量的草酸盐,制得了草酸根离子处于晶体颗粒次表面的板状溴碘化银微晶乳剂.对其实验过程的考察和感光性能的测试结果表明:1)草酸根掺杂于次表面的溴碘化银乳剂与未掺杂乳剂相比较,经过化学增感后,或光谱增感后的乳剂,其感光度有明显提高(Sd/S0≥1.5),即具有明显的增感效应;2)无论是经过化学增感,还是经光谱增感后的乳剂,草酸根掺杂溴碘化银颗粒乳剂的灰雾水平都不高.

Sensitization on Tabular Silver Iodine Bromide Emulsion Doped with Oxalate

In the emulsifying process of AgBrI microcrystals in the double-jet apparatus controlled by a microcomputer,a certain amount of oxalate salt was injected at specific time and pAg into a reactor to prepare tabular AgBrI grain emulsions in which oxalate ions were doped at subsurface of AgBrI microcrystals.The observation results from the whole experiments and sensitometric results from these emulsions showed: 1) that the sensitivities(Sd) of oxalate-doped emulsions,relative to those(S0) of the corresponding u...