Do All Stars Rely on Quantum Tunneling for Fusion?

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SUMMARY

All stars rely on quantum tunneling to initiate nuclear fusion, as confirmed by the discussion among scientists. High mass stars, despite their dense cores, do not break the Coulomb barrier without tunneling. The core density in these stars affects the mean separation of nuclei, which in turn influences the Coulomb barrier's size. The discussion raises critical questions about the density required for the mean separation to fall within the strong nuclear force range and the mass of stars capable of achieving such densities.

PREREQUISITES
  • Understanding of quantum tunneling in nuclear physics
  • Knowledge of the Coulomb barrier and its implications in fusion
  • Familiarity with stellar core density and its effects on nuclear interactions
  • Concept of strong nuclear force and its role in fusion processes
NEXT STEPS
  • Research the role of quantum tunneling in stellar nucleosynthesis
  • Study the relationship between core density and nuclear fusion in high mass stars
  • Examine the conditions under which the Coulomb barrier can be overcome
  • Investigate the characteristics of stars with extreme densities and their fusion processes
USEFUL FOR

Astronomers, astrophysicists, and students studying stellar evolution and nuclear fusion processes will benefit from this discussion.

deadscientist
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Hello fellow scientists,
Do all stars rely on quantum tunneling for fusion or do high mass stars break the Coulomb barrier without tunneling? Thanks
 
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all stars depend on Tunneling to start Nuclear fusion. I have not come across any star in my course where we talked about breaking the coulomb barrier
 
You can probably answer your own question.
What is it that gives rise to the coulomb barrier?

In high mass stars, the core density is very high - what does that do to the mean separation of nuclei?
What does than mean for the size of the coulomb barrier?

How dense would the core need to be for the mean separation to be within the range of the strong nuclear force?
How massive would a star have to be to get that dense?
Are there any fusing stars that massive?
 

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