激光法实时测量真空室内原子蒸气束的二维密度通量分布  

Real-time Measurement of 2-D Density Flux Distribution of Atomic Vapor in Vacuum Chamber by Laser Fluorescence

作　　者：孔羽飞[1] 王德武[1] 吕江华 应纯同[1] 

机构地区：[1]清华大学工程物理系

出　　处：《中国激光》1994年第4期261-265,共5页Chinese Journal of Lasers

摘　　要：介绍一种利用激光诱导荧光法实时测量真空室内原子蒸气束的二维密度通量分布的方法与装置。实验结果表明：以点（４×６ｍｍ２）为蒸发模型的二维密度通量分布规律不随加热功率的变化而改变，且这个分布规律可用余弦分布近似来描述。密度通量与加热功率近似呈线性关系变化。A method and its relative apparatus of using laser fluorescence to measure the two dimensional density flux ditribution of the atomic vapor in vacuum chamber is introduced in this paper. The experiment shows: the distribution rule of two dimensional density flux in the vapor model of 4 × 6 mm2 is independent of the heating power, and it can be described in the 6th power of cosine distribution, and the density flux varies linearly with the heating power approximately.

关 键 词：真空室 原子蒸气束 密度通量 激光 

分 类 号：TN249[电子电信—物理电子学]