影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (3): 183-190.DOI: 10.7517/j.issn.1674-0475.2007.03.183

• 研究论文 • 上一篇    下一篇

草酸根掺杂立方体溴化银乳剂颗粒的增感效应研究

马望京1,2, 夏培杰1   

  1. 1. 中国科学院, 理化技术研究所, 北京, 100080;
    2. 中国科学院, 研究生院, 北京, 100039
  • 收稿日期:2006-11-13 修回日期:2007-01-08 出版日期:2007-05-23 发布日期:2007-05-23
  • 通讯作者: 夏培杰,E-mail:XPJ@mail.ipc.ac.cn.
  • 基金资助:
    国家自然科学基金资助项目(20033010)

Sensitization on Cubic Silver Bromide Emulsion Doped with Oxalate

MA Wang-jing1,2, XIA Pei-jie1   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China;
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China
  • Received:2006-11-13 Revised:2007-01-08 Online:2007-05-23 Published:2007-05-23

摘要: 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立方体溴化银微晶乳剂.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化银乳剂与未掺杂乳剂相比较,无论是原始乳剂,还是经过化学增感,或用染料进行光谱增感后的乳剂,感光度都有明显提高(Sd/S0≥1.5),有明显的增感效应;(2)无论是原始乳剂,还是经过化学增感,或光谱增感后的乳剂,草酸根掺杂立方体溴化银乳剂颗粒的灰雾水平都不高;(3)草酸根掺杂立方体溴化银颗粒与甲酸根掺杂的溴化银乳剂相比,产生的增感效应相差不大;(4)与甲酸根掺杂立方体溴化银颗粒相比,草酸根掺杂立方体溴化银颗粒的制备方法明显较前者要简单得多,颗粒形状也优于前者.

关键词: 草酸根, 掺杂, 立方体, 溴化银, 增感效应

Abstract: In the emulsifying process of AgBr 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 cubic AgBr grain emulsions in which oxalate ions were doped at subsurface of AgBr microcrystals.The observation results from the whole experiments and sensitometric results from these emulsions showed: 1) the sensitivities (Sd) of oxalate-doped emulsions,relative to those (S0) of the corresponding undoped ones as the controlled,regardless of whether it is primitive,or sensitized chemically and spectrally,were remarkably increased (Sd/S0≥1.5); 2) fog level of oxalate-doped emulsions,regardless of whether it is primitive,or sensitized chemically and spectrally,were kept low; 3) sensitization gains of oxalate-doped emulsions were nearly same as one of formate-doped emulsions; 4) the preparation of cubic AgBr emulsions doped with oxalate was more simple than those of cubic ones doped with formate,and the formers’ shape was more sharper than the latters’.

Key words: oxalate, doping, cubic, silver bromide, sensitization

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