Abstract
The neutron capture cross sections and solar abundances of , , , and have been measured. With this data base -process studies have been carried out to determine the -process neutron density and temperature and to investigate the -process nucleosynthesis of the clock. From various branchings the neutron density was found to be (0.8-1.8)× neutrons per and the temperature to be 18—28 keV. On the basis of the present data, proved not to be applicable as a cosmic clock because of the temperature sensitivity of the half-life but can be used instead as a stellar thermometer. Constraints for the -process temperature ( keV) were found to be in good agreement with the investigated branchings.
- Received 6 April 1984
DOI:https://doi.org/10.1103/PhysRevC.30.464
©1984 American Physical Society