Recently Synthesized r-Process Nuclei: Ultra-Heavy Cosmic Rays and Peculiar Stars
Abstract
Recently synthesized (t≲109 yr)r-process material has actinide elemental and isotopic abundance characteristics which can be used to distinguish it from ancientr-process material. The time-dependence of relative actinide abundances provides detailed chronometric information. Also it is shown that, ifN=184 is a neutron magic number as predicted by nuclear thery, the resultingr-process production peak atA∼281 will in turn yield, due to symmetric fission, a broad abundance peak aroundA∼135 140. The present results can be used to help verify or refute some current hypotheses concerning the origin of UH cosmic rays and some of the abundance anomalies in peculiar stars.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- October 1974
- DOI:
- 10.1007/BF00648274
- Bibcode:
- 1974Ap&SS..30..275B
- Keywords:
-
- Abundance;
- Actinide Series;
- Cosmic Rays;
- Heavy Nuclei;
- Peculiar Stars;
- Stellar Radiation;
- Nuclear Astrophysics;
- Radioactive Isotopes;
- Stellar Evolution;
- Time Dependence;
- Astrophysics