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physical phenomena > energy source > exothermic fusion process > hydrogen burning > proton-proton chain > PP III
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PP III comparison table
Subject has reaction probability has reaction is a kind of is an instance of has definition
proton-proton chain  pycnonuclear reaction An important nuclear fusion reaction that occurs in stars. It begins with the fusion of two hydrogen nuclei, each of which consists of a single proton.
PP IIIonce in 1000 times1H(p, β+v)2D(p, γ)3He(4He,γ)7Be(p,γ)8B (β+v)8Be → 2 4He proton-proton chainA thermonuclear reaction in which hydrogen nuclei are transformed into helium nuclei. Occurs once in 1000 times.

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