卤化银材料光作用过程的时间分辨谱测量  

Time Resolution Spectrum Measurements of the Process of Photon Acting on the Silver Halide Materials

作　　者：李晓苇[1] 胡小永[1] 韩理[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002

出　　处：《光谱学与光谱分析》2002年第5期728-731,共4页Spectroscopy and Spectral Analysis

基　　金：河北省自然科学基金资助项目 (1 991 0 4 )

摘　　要：卤化银材料是重要的光信息材料 ,对于信息科学与技术的发展具有非常重要的作用。光作用过程的时间特性在很大程度上决定了卤化银材料性能的优劣。本文采用微波吸收技术来测量卤化银材料光作用过程的时间特性。卤化银材料样品被放入微波谐振腔中 ,在准分子激光的作用下 ,卤化银材料中生成了光生载流子 ,光生载流子的产生改变了卤化银材料的介电函数。因此 ,介电函数的变化体现光生载流子时间特性的信息 ,同时 ,介电函数的变化引起微波谐振腔品质因数的改变 ,品质因数的改变使腔输出了一个反射波 ,反射波包含卤化银材料光作用时间特性的信息。通过测量反射波、我们能获得卤化银材材料光作用过程的时间分辨谱并研究光作用过程的时间特性。本文获得了卤化银材料光作用过程的时间分辨谱 ,并对黑白、彩色和XThe silver halide material is a very important optical information material.Silver halide material plays a very imperative role in the development of the information science and technology.The time characters of the photon action process determine the quality of the silver halide material to a great degree.We adopt the microwave absorption technology to measure the time characters of the process of the photon acting on silver halide material. A sample of the silver halide material is inserted into a microwave resonant cavity.With the excitation of excimer laser,photogenerated charge carriers are created in the silver halide material.The generation of the photogenerated charge carriers changes the dielectric function of the silver hailde material. Therefore, the change of the dielectric function embodies the information of the time characters of the photogenerated change carries.At the same time, the change of the dielectric function results in an alteration of the cavity quality factor.This change leads to a reflected microwave.The reflected microwave contains the information of the time characters of the photon action process.Through the measurement of the reflected microwave, we can obtain the time resolution spectrum of the process of the photon acting on the silver halide material and study the time characters of the photon action process. The time resolution spectra of the process of the photon acting on various silver hailde materials were obtained in our experiments.We analyzed the time characters of photon acting on the black-and-white film,color film and X-ray film.

关 键 词：时间分辨谱 测量 卤化银材料 光作用过程 时间分辨 微波吸收 光信息材料 

分 类 号：TQ572.1[化学工程—精细化工] O482.3[理学—固体物理]