Monochromator crystal

Ge [6]

Si [7]

d₁₁₁ (Å)

3.26659

3.13560

A = SM = 2r・sin(θ_M − τ) (mm)

120

120

B = FM = 2r・sin(θ_M + τ) (mm)

355

355

tan τ = [(B − A)/(B + A)]・tan(θ_M)

CuKβ radiation λ (Å)

1.39225

θ_M (˚)

12.304

12.827

τ (˚)

6.159

8.295

r (mm)

560.48

492.57

2r (mm)

1120.96

985.14