TY - JOUR
T1 - Position effect of Ag2 doped in cubic silver bromide emulsions
AU - Zhi, Xin
AU - Shi, Yao
AU - Xia, Pei Jie
PY - 2005/9
Y1 - 2005/9
N2 - In the emulsifying process of silver bromide microcrystals in the double-jet apparatus controlled by a microcomputer, a specific quantity of DMAB was added at different time when the crystal growth to obtain a series of cubic AgBr emulsions in which Ag2 were doped into different depths of AgBr microcrystals. The results from determination of photographic properties of these emulsions showed: 1) that the sensitivities of Ag2 doped emulsions, relative to that of the undoped emulsion as the controlled one, were remarkably increased; 2) that a significant cooperative sensitization of the internal doped silver dimmers with the surface sulfur-plus-gold and dye sensitizations was observed; 3) that the closer to the surface of grains the Ag2 doped in AgBr grains was, and the greater the sensitivities of the doped emulsions were; 4) that fog densities of all emulsions doped by Ag2, including those primitive, sensitized by sulfur-plus-gold and by green-sensitive dye, were kept in a reasonably low level.
AB - In the emulsifying process of silver bromide microcrystals in the double-jet apparatus controlled by a microcomputer, a specific quantity of DMAB was added at different time when the crystal growth to obtain a series of cubic AgBr emulsions in which Ag2 were doped into different depths of AgBr microcrystals. The results from determination of photographic properties of these emulsions showed: 1) that the sensitivities of Ag2 doped emulsions, relative to that of the undoped emulsion as the controlled one, were remarkably increased; 2) that a significant cooperative sensitization of the internal doped silver dimmers with the surface sulfur-plus-gold and dye sensitizations was observed; 3) that the closer to the surface of grains the Ag2 doped in AgBr grains was, and the greater the sensitivities of the doped emulsions were; 4) that fog densities of all emulsions doped by Ag2, including those primitive, sensitized by sulfur-plus-gold and by green-sensitive dye, were kept in a reasonably low level.
KW - Cooperative sensitization
KW - Doped by Ag dimmer
KW - Dye sensitization
KW - Hole-electron converter
KW - Sulfur-plus-gold sensitization
UR - http://www.scopus.com/inward/record.url?scp=25144518330&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:25144518330
SN - 1000-3231
VL - 23
SP - 357
EP - 362
JO - Ganguang Kexue yu Guanghuaxue/Photographic Science and Photochemistry
JF - Ganguang Kexue yu Guanghuaxue/Photographic Science and Photochemistry
IS - 5
ER -