Abstract
A measurement of the direct two-proton removal from has provided the first structural information on the isotone . The value for the inclusive cross section for two-proton removal from of 40 b is significantly lower than that predicted by structure calculations using the recent SDPF-MU shell-model effective interaction combined with eikonal reaction theory. This observed discrepancy is consistent with the interpretation that only one of the predicted low-lying 0 states in is bound. A two-state mixing analysis describing two-proton knockout cross sections along provides support for the interpretation of a prolate-deformed ground state.
- Received 20 December 2013
DOI:https://doi.org/10.1103/PhysRevC.89.041303
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