| The trapping effect of sulfur sensitization center Ag_2S cluster on T-grain AgBrI microcrystals |
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| 作者姓名： | YANG Shaopeng FU Guangsheng LI Xiaowei & TIAN Xiaodong College of Physics Science and Technology Hebei University Baoding China |
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| 作者单位： | YANG Shaopeng，FU Guangsheng，LI Xiaowei & TIAN Xiaodong College of Physics Science and Technology，Hebei University，Baoding 071002，China |
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| 基金项目： | 国家自然科学基金，the Key Science and Technology Project of Ministry of Education of China，the Doctor Foundation of Hebei Province of China |
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| 摘 要： | Chemical sensitization is a widely adopted technique that improves the photo-graphic sensitivity of silver halide crystals with basic emulsion. Sensitization centers,which can save photoelectrons in the process of latent-image formation, have beenformed on microcrystals after chemical sensitization. Therefore, chemical sensitizationwas widely adopted for many years. Sulfur sensitization is an important chemical sen-sitization technique in all chemical sensitization methods. First, in 1925, Sh…
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The trapping effect of sulfur sensitization center Ag2S cluster on T-grain AgBrI microcrystals |
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| YANG Shaopeng,FU Guangsheng,LI Xiaowei & TIAN Xiaodong College of Physics Science and Technology,Hebei University,Baoding ,China.The trapping effect of sulfur sensitization center Ag_2S cluster on T-grain AgBrI microcrystals[J].Science in China(Physics Astronomy),2004,47(6). |
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| Authors: | Yang Shaopeng Fu Guangsheng LI Xiaowei TIAN Xiaodong |
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| Institution: | College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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| Abstract: | The microwave absorption dielectric-spectrum technique was used to study the decay kinetics of photoelectrons in sulfur-sensitized silver halide crystals. The time-resolution spectrum of free electrons and shallow-trapped electrons generated in sulfur-sensitized AgBrI crystals has been obtained. The relationship of the trapping effect of sensitization centers Ag2S and sensitization time or temperature in emulsions has been discussed. With the increase in the sensitization time and temperature, the trap effect of sulfur sensitization centers varies from hole trap to shallow electron trap, and deep electron trap. |
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| Keywords: | silver halide sulfur-sensitized photoelectron trapping effect microwave absorption dielec- tric-spectrum |
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