damosuz said:4,002602 u is helium-4 including mass of electrons, but at 100 MK, helium-4 must be completely ionized, so I guess you should take mass of alpha particle...
The resonance is just close enough to be strong, but not that close to the sum of masses.The important energy level of the C12 nucleus in the present problem is one very recently identified by Dunbar, Pixley, Wenzel, and Whaling (1953). This level occurs at about 7.68 mev above ground level, which corresponds to a value of E_R of about 0.31 mev (It will be recalled that E_R is measured relative to the sum of the masses of Be8 and alpha-particle, this being about 7.37 mev above the ground level of C12
Hoyle's calculation refers to the work of astrophysicist Sir Fred Hoyle, who predicted the existence of a specific energy level in the carbon-12 nucleus. This calculation is significant because it explains the abundance of carbon in the universe, which is essential for life as we know it.
Hoyle used nuclear physics principles and mathematical equations to predict the existence of the 7.65 MeV energy level. He based his calculations on the concept of nuclear resonance, which occurs when particles within a nucleus align in a specific way to create a stable energy state.
The 7.65 MeV level is significant because it is the first step in the process of nucleosynthesis, the formation of elements in the universe. This energy level allows carbon-12 to efficiently fuse with other elements to create heavier elements, such as oxygen and nitrogen, which are crucial for life.
Yes, Hoyle's calculation has been confirmed by various experiments and observations. In 1953, Hoyle's prediction was supported by the discovery of the 7.65 MeV energy level in the carbon-12 nucleus. Since then, further studies have validated his calculation, solidifying its place in modern astrophysics.
Hoyle's calculation of the 7.65 MeV level plays a crucial role in our understanding of the universe. It explains the abundance of carbon, which is necessary for life as we know it. Additionally, it provides insight into the processes that occur within stars, helping us understand how elements are formed and distributed throughout the universe.