proton-proton chain reaction
GPTKB entity
Statements (27)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
nuclear fusion process
|
| gptkbp:alternativeTo |
gptkb:CNO_cycle
|
| gptkbp:category |
astrophysics
stellar nucleosynthesis |
| gptkbp:discoveredBy |
gptkb:Carl_Friedrich_von_Weizsäcker
gptkb:Hans_Bethe |
| gptkbp:dominantIn |
stars with mass less than 1.3 solar masses
|
| https://www.w3.org/2000/01/rdf-schema#label |
proton-proton chain reaction
|
| gptkbp:mainEnergySourceFor |
Sun
main-sequence stars |
| gptkbp:netResult |
energy released
four protons converted to one helium-4 nucleus |
| gptkbp:numberOfStages |
proton + proton → deuterium + positron + neutrino
two protons fuse to form deuterium |
| gptkbp:occurredIn |
stars
|
| gptkbp:produces |
gptkb:neutrinos
gptkb:gamma_rays gptkb:helium-4 positrons |
| gptkbp:releaseYear |
26.7 MeV per reaction
|
| gptkbp:requires |
high temperature
high pressure |
| gptkbp:step |
deuterium + proton → helium-3 + gamma ray
helium-3 + helium-3 → helium-4 + 2 protons |
| gptkbp:yearProposed |
1938
|
| gptkbp:bfsParent |
gptkb:proton
|
| gptkbp:bfsLayer |
5
|