proton-proton chain reaction

URI: https://gptkb.org/entity/proton-proton_chain_reaction
GPTKB entity
Statements (28)
Predicate Object
gptkbp:instanceOf gptkb: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
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:main_sequence_stars_like_the_Sun_(currently)
gptkb:proton
gptkbp:bfsLayer 6
https://www.w3.org/2000/01/rdf-schema#label proton-proton chain reaction