β-Decay of Excited State Nuclei and r-Process Effects
Abstract
β-Decay half-lives are of primary importance in any analysis of r-process nucleosynthesis. Their alteration can change its path and pace. Difficulties in current r-process predictions include the problems current models have to manufacture sufficient nuclei in the mass A ~200 region. However, excited state β-decays may resolve this difficutly by allowing a population of nuclei along the r-process path to circumvent the so-called closed-shells. Calculation of excited states and their decay rates is followed by an inclusion of these rates int an r-process model with temperature evolution. Comparison is made to the same process using ground-state decays. Future experimental verification of these rates is discussed.
- Publication:
-
APS Ohio Sections Fall Meeting Abstracts
- Pub Date:
- October 2000
- Bibcode:
- 2000APS..OSFDO1007F