Proton–proton chain reaction
GPTKB entity
Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
nuclear fusion process
|
| gptkbp:alternativeTo |
gptkb:CNO_cycle
|
| gptkbp:category |
astrophysics
stellar nucleosynthesis |
| gptkbp:discoveredBy |
gptkb:Hans_Bethe
|
| gptkbp:discoveredIn |
1939
|
| gptkbp:dominantInStarsWithMass |
less than 1.3 solar masses
|
| gptkbp:energyReleasedPerCycle |
about 26.7 MeV
|
| https://www.w3.org/2000/01/rdf-schema#label |
Proton–proton chain reaction
|
| gptkbp:initialReactants |
hydrogen nuclei
|
| gptkbp:mainEnergySourceFor |
Sun
main-sequence stars |
| gptkbp:netReaction |
4 1H → 4He + 2e+ + 2νe + energy
|
| gptkbp:numberOfStages |
fusion of two protons to form deuterium
|
| gptkbp:occurredIn |
stars
|
| gptkbp:produces |
gptkb:neutrinos
gptkb:gamma_rays gptkb:helium-4 positrons |
| gptkbp:requiresTemperatureAbove |
4 million Kelvin
|
| gptkbp:step |
deuterium fuses with proton to form helium-3
two helium-3 nuclei fuse to form helium-4 |
| gptkbp:bfsParent |
gptkb:Main-sequence_star
|
| gptkbp:bfsLayer |
6
|