GATE PH 2021 PH Q3: Solid State Physics

As shown in the figure, X-ray diffraction pattern is obtained from a diatomic chain of atoms

and

. The diffraction condition is given by

, where

is the order of the diffraction peak. Here,

is the lattice constant and

is the wavelength of the X-rays. Assume that atomic form factors and resolution of the instrument do not depend on

. Then, the intensity of the diffraction peaks is

Your answerChoose one option.

lower for even values of

, when compared to odd values of

lower for odd values of

, when compared to even values of

zero for odd values of

zero for even values of

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