中国物理B ›› 2004, Vol. 13 ›› Issue (8): 1326-1329.doi: 10.1088/1009-1963/13/8/025

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Investigation of photoelectron temporal characteristics in silver halide microcrystals using the microwave absorption technique

杨少鹏, 傅广生, 代秀红, 董国义, 李晓苇, 韩理   

  1. College of Physics Science & Technology, Hebei University, Baoding 071002, China
  • 收稿日期:2004-01-09 修回日期:2004-02-11 出版日期:2005-06-30 发布日期:2005-06-30
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10354001), the Key Science and Technology Research Programme of Ministry of Education of China (Grant No 01011), the Natural Science Doctor Foundation of Hebei Province, China

Investigation of photoelectron temporal characteristics in silver halide microcrystals using the microwave absorption technique

Yang Shao-Peng (杨少鹏), Fu Guang-Sheng (傅广生), Dai Xiu-Hong (代秀红), Dong Guo-Yi (董国义), Li Xiao-Wei (李晓苇), Han Li (韩理)   

  1. College of Physics Science & Technology, Hebei University, Baoding 071002, China
  • Received:2004-01-09 Revised:2004-02-11 Online:2005-06-30 Published:2005-06-30
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10354001), the Key Science and Technology Research Programme of Ministry of Education of China (Grant No 01011), the Natural Science Doctor Foundation of Hebei Province, China

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摘要： The free photoelectron lifetime reflects to a large extent the latent image formation efficiency and sensitivity of silver halide material. The microwave absorption dielectric-spectrum technique enables measurement of the photoelectron decay process of silver halide emulsion exposed to 35ps laser pulse. For T-grain AgBr emulsion, the relationship between exciting energy and photoelectron action has been obtained, and the influence of iodide dopants on photoelectron lifetime was measured and analysed. The photoelectron lifetime of dye-sensitized AgBr emulsion with tabular grains is shorter than that with cubic grains, and the latent image formation efficiency of the former is higher than the latter.

Abstract: The free photoelectron lifetime reflects to a large extent the latent image formation efficiency and sensitivity of silver halide material. The microwave absorption dielectric-spectrum technique enables measurement of the photoelectron decay process of silver halide emulsion exposed to 35ps laser pulse. For T-grain AgBr emulsion, the relationship between exciting energy and photoelectron action has been obtained, and the influence of iodide dopants on photoelectron lifetime was measured and analysed. The photoelectron lifetime of dye-sensitized AgBr emulsion with tabular grains is shorter than that with cubic grains, and the latent image formation efficiency of the former is higher than the latter.

Key words: silver halide emulsion, photoelectron lifetime, microwave absorption, dye-sensitization

中图分类号:  (Photography, photographic instruments; xerography)

  • 07.68.+m
78.70.Gq (Microwave and radio-frequency interactions)