Question

Which of the following techniques is commonly employed to evaluate the
scattering amplitude?
(a) WKB approximation
(b) partial wave analysis
(c) Born approximation
(d) b.
(b) ind (c)​

Answer 1

For calculating the scattering amplitude of an assembly of atoms, i.e., the structure factor (see Section 2.2.1), one usually writes the atomic scattering factor as follows:

, where f′ > 0. Theoretical values of f0 (Q/2π = 2sinθ/λ) and bare atom Δf0 = f′0 + + i f”0 are tabulated or can be calculated