Abstract
We report the observation of a very exotic decay mode at the proton drip line, the -delayed -proton decay, clearly seen in the decay of the nucleus . Three -proton sequences have been observed after the decay. Here this decay mode, already observed in the shell, is seen for the first time in the shell. Both and proton decays have been taken into account in the estimation of the Fermi and Gamow-Teller strengths. Evidence for fragmentation of the Fermi strength due to strong isospin mixing is found.
- Received 13 February 2014
DOI:https://doi.org/10.1103/PhysRevLett.112.222501
© 2014 American Physical Society