recall and use I = I0 e^(-μx) for the attenuation of X-rays in matter
use IR / I0 = (Z1 - Z2)² / (Z1 + Z2)² for the intensity reflection coefficient of a boundary between two media
recall and use I = I0 e^(-μx) for the attenuation of X-rays in matter
use IR / I0 = (Z1 - Z2)² / (Z1 + Z2)² for the intensity reflection coefficient of a boundary between two media