$p$-$sd$ shell gap reduction in neutron-rich systems and cross-shell excitations in ${}^{20}$O

M. Wiedeking, S. L. Tabor, J. Pavan +15

Excited states in ${}^{20}$O were populated in the reaction ${}^{10}$Be(${}^{14}$C,$\alpha$) at Florida State University. Charged particles were detected with a particle telescope consisting…