For 180˚ scattering of gamma rays by electrons, the final energy of the photon is
0
1 2
1
E E
E
where E0 is the rest mass energy of an electron.
a. What is the final photon energy for the 6 MeV gamma ray after scattering? (5)
b. Verify that if E >> E0, the / 2 0 E E and if E