Formulas of proton–proton chain reactions (pp-cycle)

Proton–proton chain is a cycle of thermonuclear reactions occurring in stars as a result of which hydrogen is converted into helium. According to the perceptions of modern nuclear physics, pp -cycle is the main source of the sun energy.

Reaction:
Verification:

Correct:
H21 + p11 → He32 + γ
45 + 12 → 57 + 3
57≠60
H21 + p11 → He32
57=57

Reaction:
Verification:

Correct:
He32 + He42 → Be74 + γ
57 + 90 → 147 + 3
147≠150
He32 + He42 → Be74
147=147

Reaction:
Verification:
Li73 + p11 → He42 + He42
168 + 12 → 90 + 90
180=180

References: Путилов К.А., Фабрикант В.А. Курс физики. В 3-х томах. Том 3. [Putilov, K.A, Fabrikant V.A. Course of Physics. In 3 volumes. Vol. 3] Moscow: FIZMATGIZ, 1963. P. 626 [In Russian]


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