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ugalpha
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without having to rely on quantum channeling
The core has to get to about 15 million K, although some say about 10 million K.The basic process of star formation is that they emerge due to accretion of enough matter to reach a critical mass* of approximately 80 times Jupiter's, at which point internal pressures raise the core temperatures high enough to ignite nuclear fusion.
ugalpha said:without having to rely on quantum channeling
goldsax said:can fusion at 0.13 solar masses occur without quantum tunneling?
infact can nuclear reactions occur without tunneling or can sufficent kinetic energy convey enough energy to get nuclei into actual contact?
ugalpha said:without having to rely on quantum channeling
qraal said:Why even ask? Seems like a pointless question.
Nuclear fusion is a process in which two or more atomic nuclei combine to form a heavier nucleus, releasing energy in the process.
The temperature required for fusion to occur is extremely high, typically around 10 million Kelvin (K) or higher. This is because the high temperature is needed to overcome the repulsive force between positively charged nuclei and allow them to fuse together.
The mass required for fusion to occur varies depending on the type of nuclei involved. Generally, larger nuclei require higher temperatures to fuse, but the exact mass required also depends on the pressure and density of the material.
No, only stars with a certain mass and composition are able to undergo fusion. Generally, stars need to have a mass of at least 0.08 times that of our Sun in order to sustain fusion reactions in their cores.
If a star is not massive enough for fusion to occur, it will not be able to sustain itself and will eventually cool and shrink, becoming a brown dwarf or a white dwarf depending on its initial mass and composition.