Diatomic line. Consider a line of atoms ABAB... AB, with an A-B bond length of a. The form factors are f₁, f for atoms A
Posted: Wed Jul 06, 2022 10:13 am
Diatomic line. Consider a line of atoms ABAB... AB, with an A-B bond length of a. The form factors are f₁, f for atoms A, B, respectively. The incident beam of x-rays is perpendicular to the line of atoms. (a) Show that the interference condition is nλ = a cos 0, where is the angle between the diffracted beam and the line of atoms. (b) Show that the intensity of the diffracted beam is proportional to ƒ₁ - fB|² for n odd, and to [ƒ₁ +ƒB|² for n even. (c) Explain what happens if f₁ = ƒB.