Collapse of the N=28 shell closure in ${}^{42}$Si

B. Bastin, S. Grévy, D. Sohler +34

The energies of the excited states in very neutron-rich ${}^{42}$Si and ${}^{41,43}$P have been measured using in-beam $\gamma$-ray spectroscopy from the fragmentation of secondary beams of…