《电子速度对康普顿谱线位置的影响》-毕业论文设计（学术).docVIP

电子速度对康普顿谱线位置的影响 物理与电子工程学院 摘 要：康普顿散射中影响康普顿谱线位置的因素是十分复杂的，文章主要探讨电子具有初速度时对一次散射、二次散射和双光子散射的影响。从康普顿散射的基本原理出发，基于能量、动量守恒定律和相对论效应，对波长变化量进行讨论。首先讨论了电子具有初速度时的一次散射、二次散射，得出波长的改变量不仅与散射角有关，还与入射光的波长（频率）有关；其次讨论了产生双光子的康普顿散射，由于这种散射的复杂性，只选取了特殊情况进行讨论，得出散射光子的频率不仅与入射光子的频率有关，还与两个散射光子的散射角有关，电子具有初速度会增大散射波长的改变量。通过研究一般情况的康普顿散射，得出影响波长改变量的因素不仅与散射角有关，还与电子的初速度、入射光的波长等有关。 关键词：康普顿散射；二次散射；双光子散射；波长改变量 Abstract：Compton effect Compton scattering in the line position is very complex factors, the article mainly discusses the initial velocity of electrons when the first scattering double scattering and two-photon scattering. Compton scattering from the basic principle, based on the energy and momentum conservation laws and relativistic effects, the wavelength variation of the discussion on the line. First discussed when the initial velocity of electrons at a scattering, double scattering, the change in the wavelength obtained not only with the scattering angle, but also with the incident light wavelength (frequency)-related; followed by discussion of the double photon Compton scattering , Due to the complexity of this scattering, only special cases selected for discussion, the frequency of scattered photons obtained not only the frequency of incident photons, but also with the two scattered photons on the scattering angle, will increase the initial velocity of electrons scattering The change in wavelength. The general situation by studying the Compton scattering, obtained the factors affect the amount of wavelength change not only with the scattering angle, but also with the electron initial velocity, the wavelength of incident light and so on. Key words：Compton scattering; double scattering; two-photon scattering; the amount of wavelength change 1 概述 康普顿散射在基础物理学[1]中占有十分重要的地位。众所周知,光与物质作用有三种表现形式：光电效应、康普顿效应和光生电子对三种形式。康普顿效应的重要意义在于：一方面证明了光子理论，说明了光子具有一定的质量、能量和动量；另一方面证明了能量守恒和动量守恒在微观世界也严格成立。随着康普顿散射研究[2-8]的深入，它的应用越来越广泛。通过康普顿散射可以对物质内部进行检测、分析。一般资料对其只介绍了最理想的情况──入射光子与静止、自由电子的相互作用，利用能量守恒和动量守恒定律，推导出康普顿散射的公式