布拉格定律:nλ = 2dsinθ -----------------------------------------------------------(1)
簡單立方晶格的單胞長度a與晶格間距dhkl的關係:dhkl = a / (h2+k2+l2)0.5----------(2)
結合(1)、(2)式得
λ/2a = sinθ/(h2+k2+l2)0.5λ:入射波長、θ:繞射角度
0.3/(2×0.3) = sinθ/(12+12+02)0.5
sinθ = √2 /2
θ = 45°
22、簡單立方晶格的單胞長度(Unit-cell edge length) a與..-阿摩線上測驗