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 42 MeV
(i)
e + + e – ® g + g + 1 02 MeV
(ii)
2
1
3
1
1
2
H
H
He
+
→
+ g + 5 49 MeV
(iii)
+
→
+
+
3
3
4
1
1
2
2
2
1
1
He 
He 
He
H
H + 12