Give a detailed explanation;

Measurement of the relative intensities of superlattice lines in $x-$ray Debye$-$Scherrer patterns is

a common way to detect the degree of order in an ordered alloy. Calculate the relative intensities

of the first seven lines on a Debye$-$Scherrer powder pattern of stoichiometric NiAl $($lattice

parameter $=0\mathrm{.}288nm)$ made using $Cu{K}_{}$ radiation. NiAl is a strongly ordered $($assume $S=1)$

intermetallic compound. The crystal structure is B$2,$ in which Ni atoms occupy $0,0,0$ positions

and $Al$ atoms occupy $\frac{1}{2},\frac{1}{2},\frac{1}{2}$ positions in a simple cubic unit cell. You may neglect the

absorption and temperature factors.