42. •• Near high-neutron areas, such as a nuclear reactor, neutrons will be absorbed by protons (the hydrogen nucleus in water molecules) and will give off a gamma ray of a characteristic energy in the process.

(a) Write the equation for the neutron absorption process and the subsequent gamma decay of the product nucleus.

(b) What is the energy of the gamma ray (to three significant figures)? (Neglect nuclear recoil effects.)