Calculate the amount of energy released (or absorbed) during the step of the primary PP chain shown below:
2/1 H + 1/1 H -> 3/2 He + gamma
Give your answer in units of MeV. Energy released should be a positive number. Energy absorbed would be a negative number.
The masses of 2H, 3He, and 4He are 2.014355 u, 3.01603 u, and 4.002603 u respectively. The mass of 1H is the same as the mass of the proton, 1.007276 u.
The mass of an electron (or positron) is 5.486e-4 u.
Assume the masses of a neutrino and a photon are both 0 u (close enough here).