Concept information
Terme préférentiel
r-process
Définition(s)
- In nuclear astrophysics, the rapid neutron-capture process, also known as the r-process, is a set of nuclear reactions that is responsible for the creation of approximately half of the atomic nuclei heavier than iron, the "heavy elements", with the other half produced by the p-process and s-process. The r-process usually synthesizes the most neutron-rich stable isotopes of each heavy element. The r-process can typically synthesize the heaviest four isotopes of every heavy element, and the two heaviest isotopes, which are referred to as r-only nuclei, can be created via the r-process only. Abundance peaks for the r-process occur near mass numbers A = 82 (elements Se, Br, and Kr), A = 130 (elements Te, I, and Xe) and A = 196 (elements Os, Ir, and Pt). (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/R-process)
Concept(s) générique(s)
Synonyme(s)
- rapid neutron-capture process
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/MDL-P7BTHBQ9-J
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