Clearly, fusion in the sun involves protons
whose energies are much above the average energy The fusion reaction in the sun is a multi-step process in which the
hydrogen is burned into helium Thus, the fuel in the sun is the hydrogen
in its core The proton-proton (p, p) cycle by which this occurs is
represented by the following sets of reactions:
1
1
2
1
1
1
H
H
H
+
→
+ e+ + n + 0