Astronomy View all facts Glossary Help |
physical phenomena > energy source > exothermic fusion process > hydrogen burning |
hydrogen burning comparison table |
Subject | has location | has reaction | has required reactant concentration | is a kind of | has part intermediate product | has minimum mass | has catalyst | has synonym | has definition | has discovered date | has part catalyst | has optimum temperature | has temperature dependence | produces energy | has minimum temperature | has next higher temperature reaction |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
carbon cycle | 12C(p, γ) 13N(p, γ) 14O(β+ν) 14N(p, γ) 15O(β+ν) 15N(p, α) 12C | hydrogen burning | 1.5 solar masses | carbon, nitrogen and oxygen | CNO cycle | Use of carbon and nitrogen as intermediates in the nuclear fusion process of the Sun. Cooler stars undergo the proton-proton cycle. | 1938 | oxygen | E ∝ T15 | 26.7 MeV | 15 to 20 million Kelvin | helium burning | ||||
proton-proton chain | the center of the Sun an other stars | high | pycnonuclear reaction | tritium | 0.08 solar masses | p-p chain | An important nuclear fusion reaction that occurs in stars. It begins with the fusion of two hydrogen nuclei, each of which consists of a single proton. | 5 million Kelvin | E ∝ T4 | 107 K | carbon cycle |
Next exothermic fusion process: neon burning Up: exothermic fusion process Previous exothermic fusion process: helium burning