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physical phenomena > energy source > exothermic fusion process > hydrogen burning > proton-proton chain > PP III |
PP III | ||||
subject | fact |
PP III | has reaction 1H(p, β+v)2D(p, γ)3He(4He,γ)7Be(p,γ)8B (β+v)8Be → 2 4He | |
has reaction probability once in 1000 times | ||
has definition A thermonuclear reaction in which hydrogen nuclei are transformed into helium nuclei. Occurs once in 1000 times. | ||
is an instance of proton-proton chain | ||
proton-proton chain | has required reactant concentration high | |
has optimum temperature 5 million Kelvin | ||
has part intermediate product deuterium | ||
has part intermediate product tritium | ||
has part product helium | ||
has part reactant proton | ||
has next higher temperature reaction carbon cycle | ||
has temperature dependence E ∝ T4 | ||
has minimum temperature 107 K | ||
has synonym p-p chain | ||
has location the center of the Sun an other stars | ||
hydrogen burning | has minimum mass 0.08 solar masses | |
has product helium | ||
has catalyst | ||
has reactant hydrogen | ||
exothermic fusion process | liberates energy | |
fusion | has antonym fission | |
produces energy | ||
physical process | has domain physics |
Next proton-proton chain: pep reaction Up: proton-proton chain Previous proton-proton chain: PP II