6533b870fe1ef96bd12cf07d
RESEARCH PRODUCT
Operation of the r-process and cosmochronology
P. MöllerJohn J. CowanJ. P. BitouzetJ. P. BitouzetFriedrich-karl ThielemannKarl-ludwig KratzJames W. Truransubject
Nuclear physicsPhysicsNuclear reactionNeutron captureMarine chronometerlawNucleosynthesisGeneral Physics and Astronomyr-processNeutronBeta decaylaw.inventiondescription
Abstract The rapid neutron capture process produced about half of the heavy elements in nature beyond the Fe-peak. In the past quite a number of astrophysical sites have been suggested, but none of them has yet been uniquely identified. Without assuming a particular site or model, we deduce the conditions responsible for the production of r-process nuclei by making use of the following information: (1) the solar r-process abundances and (2) nuclear masses and beta decay half lives for nuclei far from stability - in particular experimental information near magic neutron numbers, which determines the shape of the r-process peaks. In addition, we review briefly galactic age determinations based on the long-lived r-process chronometer nuclei 232 Th, 235 U and 238 U.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-05-01 | Physics Reports |