A First Glimpse at the Shell Structure beyond ${}^{54}$Ca: Spectroscopy of ${}^{55}$K, ${}^{55}$Ca, and ${}^{57}$Ca

T. Koiwai, K. Wimmer, P. Doornenbal +80

States in the $N=35$ and 37 isotopes ${}^{55,57}$Ca have been populated by direct proton-induced nucleon removal reactions from ${}^{56,58}$Sc and ${}^{56}$Ca beams at the RIBF. In addit…