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.
Fund: 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
Cite this article:
Yang Shao-Peng, Fu Guang-Sheng, Dai Xiu-Hong, Dong Guo-Yi, Li Xiao-Wei, Han Li Investigation of photoelectron temporal characteristics in silver halide microcrystals using the microwave absorption technique 2004 Chin. Phys. 13 1326