南京师大学报(自然科学版)
南京師大學報(自然科學版)
남경사대학보(자연과학판)
JOURNAL OF NANJING NORMAL UNIVERSITY (NATURAL SCIENCE EDITION)
2014年
3期
58-61
,共4页
横向能量%入射角度%共振透射系数%多势垒结构
橫嚮能量%入射角度%共振透射繫數%多勢壘結構
횡향능량%입사각도%공진투사계수%다세루결구
transverse energy%incidence angle%resonant transmission coefficient%multi-barriers structure
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。
利用一維多勢壘結構模型推導齣透射繫數的錶達式,併計算瞭一維四勢壘結構在不同的橫嚮能量及不同的入射角度下對共振傳輸的影響。通過計算可以看齣多勢壘結構相噹于過濾器,對入射粒子可以起到一箇過濾作用,可以通過控製入射粒子的橫嚮能量及入射角度使得隻有具有一定能量的粒子通過,從而可以選擇齣具有不同能量的粒子。本文在對晶體電子散射及電子光譜學領域的分析具有一定的幫助。
이용일유다세루결구모형추도출투사계수적표체식,병계산료일유사세루결구재불동적횡향능량급불동적입사각도하대공진전수적영향。통과계산가이간출다세루결구상당우과려기,대입사입자가이기도일개과려작용,가이통과공제입사입자적횡향능량급입사각도사득지유구유일정능량적입자통과,종이가이선택출구유불동능량적입자。본문재대정체전자산사급전자광보학영역적분석구유일정적방조。
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.