辐射与介质相互作用的高阶效应研究  

Study on higher-order effect of radiation interacting with medium

作　　者：刘月新[1] 李丰[2] 

机构地区：[1]湖南理工学院物理系,湖南岳阳414006 [2]中国南方电网超高压公司,广东广州510620

出　　处：《湖南理工学院学报（自然科学版）》2004年第4期50-52,共3页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：湖南省教育厅基金资助项目 (0 4C2 75 )

摘　　要：从量子力学的基本理论出发 ,研究了辐射场与介质相互作用的高阶效应 ,推出了介质在辐射场中有激发时的密度矩阵的运动方程 ,套出了辐射饱和时的强度计算公式。并得到了辐射场饱和时的强度与跃迁速率P的平方成反比 ,与高、低能级的衰减速率成正比的重要结论。From the theory of quantum mechanics,we studied higher-order effect that radiation field interacts with medium,and got the equation of kinematics of density matrix that medium had excitation in radiation field. From this ,we got the calculating formula when radiation reached saturation.We also got an important conclusion that intensity was in inverse proportion to the square of transition speed and in direct ration to attenuation speed of high and low energy level.

关 键 词：量子力学 辐射场 介质 高阶效应 饱和强度 跃迁速率 

分 类 号：O562.3[理学—原子与分子物理]