What Causes Deuterium Fusion in Massive Planets?

AI Thread Summary
Deuterium fusion in massive planets begins at around 13 Jupiter masses due to the intense pressure and temperature generated by their gravitational fields. This environment provides the necessary conditions for atoms to overcome the Coulomb barrier, allowing fusion to occur. The discussion clarifies that the energy involved is indeed kinetic energy, contrary to some interpretations. The fusion process is a result of the combination of gravitational forces and the resulting thermal dynamics. Understanding these factors is crucial for studying the formation and evolution of massive planetary bodies.
NoobixCube
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I have often seen it quoted that above the mass of 13 Jupiters, Deuterium fusion is able to begin. Is this because the gravitational field of the planetary body is strong enough to give the molecules enough kinetic energy to overcome the Coulomb barrier and fuse?
 
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Yes, although not quite kinetic energy. The pressure and temperature push the atoms together and overcome the coloumb barrier.
 
Thanks!
 
NoobixCube said:
I have often seen it quoted that above the mass of 13 Jupiters, Deuterium fusion is able to begin. Is this because the gravitational field of the planetary body is strong enough to give the molecules enough kinetic energy to overcome the Coulomb barrier and fuse?

Yes, this is correct. It is not "not quite" kinetic energy, it is very much exactly kinetic energy.
 
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