对光栅衍射实验中衍射条纹宽度的分析

Analysis of the spectral line width on grating diffraction experiment

通过对光栅衍射实验中衍射条纹宽度成因的分析,阐明实验中观测到的衍射条纹宽度主要是由平行光管的狭缝的宽度引起的,特别是在衍射角θ≤30°的小角度衍射、光栅常数a=1/300 mm,其效应大约是其他展宽效应总和的35~85倍。

Based on the analysis of the width of diffraction springs on grating diffraction experiment,and it show that the width of the collimator tube slit is the main effect to diffraction springs broadening,especially in the small-angle diffraction(θ ≤ 30 °) and grating constant a=1/300 mm,the broadening effect is 30 to 90 times than all other effects.