carbon-nitrogen-oxygen cycle

n. A cyclic chain of thermonuclear fusion reactions in which carbon, nitrogen, and oxygen atoms undergo successive reactions with hydrogen nuclei or decay by emitting positrons and neutrinos or gamma rays, with each completion of the cycle converting four hydrogen nuclei into one helium nucleus and leaving the number of carbon, nitrogen, and oxygen atoms unchanged. The cycle generates significant amounts of energy and is thought to be the primary reaction fueling main-sequence stars more massive and hotter than the sun. Also called Bethe cycle, carbon cycle, carbon-nitrogen cycle, CNO cycle.

carbon-nitrogen-oxygen cycle:

see nucleosynthesisnucleosynthesis
or nucleogenesis,
in astronomy, production of all the chemical elements from the simplest element, hydrogen, by thermonuclear reactions within stars, supernovas, and in the big bang at the beginning of the universe (see nucleus; nuclear energy).
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carbon–nitrogen–oxygen cycle

See carbon cycle.

单词	carbon-nitrogen-oxygen cycle
释义	carbon-nitrogen-oxygen cycle carbon-nitrogen-oxygen cycle n. A cyclic chain of thermonuclear fusion reactions in which carbon, nitrogen, and oxygen atoms undergo successive reactions with hydrogen nuclei or decay by emitting positrons and neutrinos or gamma rays, with each completion of the cycle converting four hydrogen nuclei into one helium nucleus and leaving the number of carbon, nitrogen, and oxygen atoms unchanged. The cycle generates significant amounts of energy and is thought to be the primary reaction fueling main-sequence stars more massive and hotter than the sun. Also called Bethe cycle, carbon cycle, carbon-nitrogen cycle, CNO cycle. carbon-nitrogen-oxygen cycle carbon-nitrogen-oxygen cycle: see nucleosynthesisnucleosynthesis or nucleogenesis, in astronomy, production of all the chemical elements from the simplest element, hydrogen, by thermonuclear reactions within stars, supernovas, and in the big bang at the beginning of the universe (see nucleus; nuclear energy). ..... Click the link for more information. . carbon–nitrogen–oxygen cycle See carbon cycle. ThesaurusSeenucleosynthesis
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