Abstract
The reaction on the isoscalar, doubly magic nuclei and has been measured in the energy range . The forward angle cross sections of the ground state transitions (GST) show a very pronounced resonancelike energy dependence. The observed energy and angle dependences are well described by the recent hypothesis of the formation of a resonance in the course of the double charge exchange process. The deduced spreading widths are in accordance with estimates of the collision damping in the nuclear medium. In the reaction on in addition to the GST the transition to a state at in has been observed, which is interpreted as the quadruple isobaric analog state (QIAS) of the state in at .
- Received 23 May 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.3849
©1997 American Physical Society