The Born approximation yields f(k,k′)≃m2πℏ2∫ei(k−k′)⋅r′V(r′)d3r′. Thus, \(f({\bf k},{\bf...The Born approximation yields f(k,k′)≃m2πℏ2∫ei(k−k′)⋅r′V(r′)d3r′. Thus, f(k,k′) becomes proportional to the Fourier transform of the scattering potential V(r) with respect to the wavevector q=k−k′.