Abstract
The isospin mixing was deduced in the compound nucleus at an excitation energy of from the decay of the giant dipole resonance. The reaction at was used to form the compound nucleus in the isospin channel, while the reaction at was used as the reference reaction. The rays were detected with the AGATA demonstrator array coupled with :Ce detectors. The temperature dependence of the isospin mixing was obtained and the zero-temperature value deduced. The isospin-symmetry-breaking correction used for the Fermi superallowed transitions was extracted and found to be consistent with -decay data.
- Received 26 March 2015
DOI:https://doi.org/10.1103/PhysRevLett.115.222502
© 2015 American Physical Society