32.5 Exercise 11

Show that the total energy released in the proton-proton cycle is 26.7 MeV, considering the overall effect in $^{1} \text{H } + ^{1} \text{H } \rightarrow ^{2} \text{H} + e^{+ } + v_{\text{e}}$, $^{1} \text{H} + ^{2} \text{H} \rightarrow ^{3} \text{He } + \gamma$, and $^{3} \text{He } + ^{3} \text{He} \rightarrow ^{4} \text{He} + ^{1} \text{H} + ^{1} \text{H}$ and being certain to include the annihilation energy.