Use the result of Problem 15 and the method of Problem 18 to
find the cosine of the scattering angle in the LAB system, cos( ) _ LAB
. Does the result show that scattering in the LAB system is backward,
isotropic, or forward scattering?
Find the probability of isotropic scattering into a
differential solid angle is d_/4_r2 where the
differential solid angle d_ is given as 2_rsin(_COM)(rd_COM).
[Hint: Integrate over _ to get scattering in the segment]