Is a Photon Emitted in the Proton-Proton Chain Reaction?

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SUMMARY

The proton-proton chain reaction involves the fusion of a deuteron and a proton to create a helium-3 nucleus, releasing 5.493 MeV of energy as described by E=mc². To conserve momentum during this fusion process, at least two particles must be emitted, which includes a photon. This emission is crucial for balancing the momentum of the resulting particles, confirming that a photon is indeed released during the reaction.

PREREQUISITES
  • Understanding of nuclear fusion processes
  • Familiarity with the proton-proton chain reaction
  • Knowledge of energy-mass equivalence (E=mc²)
  • Basic concepts of momentum conservation in physics
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  • Research the specifics of the proton-proton chain reaction in stellar environments
  • Explore the role of photons in nuclear reactions
  • Study the conservation of momentum in particle physics
  • Investigate the energy output of different fusion reactions
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Astronomers, physicists, and students studying nuclear fusion and particle physics will benefit from this discussion, particularly those interested in stellar processes and energy generation in stars.

Aidan Davis
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In the proton chain, a deuteron and proton fuse to make a nucleus of helium 3, releasing 5.493 MeV by E=mc^2. To have the same total momentum before and after fusion, at least two particles must be emitted, right? That way they can "cancel out" some momentum by having roughly opposite directions. So is there some photon or neutrino that I'm leaving out?
 
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Aidan Davis said:
So is there some photon or neutrino that I'm leaving out?
Yes, a photon is also emitted.
 

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