横向能量及入射角度对多势垒结构共振传输的影响

摘要

The expression of transmission coefficient have been deduced for a one-dimensional multi-barrier structure,the effect of resonant transmission,with different transverse energy and different incident angles in four barrier structure,have been calculated. As can be seen by calculation that the multi-barrier structure is equivalent to a filter which has filtration function for incident particles. This structure can control the transverse energy and angles of incident particles so that only particles with certain energy pass. Hence, in this way, we can select out different particles with different energy. Meanwhile,this plays an important role in the area of analysis of crystal electron scattering and electron spectroscopy.%利用一维多势垒结构模型推导出透射系数的表达式，并计算了一维四势垒结构在不同的横向能量及不同的入射角度下对共振传输的影响。通过计算可以看出多势垒结构相当于过滤器，对入射粒子可以起到一个过滤作用，可以通过控制入射粒子的横向能量及入射角度使得只有具有一定能量的粒子通过，从而可以选择出具有不同能量的粒子。本文在对晶体电子散射及电子光谱学领域的分析具有一定的帮助。