$\gamma$ ray spectroscopy of ${}^{19}$C via single neutron knock-out reaction

The one neutron knock-out reaction ${}^1$H(${}^{20}$C,${}^{19}$C$\gamma$) was studied at RIKEN using the DALI2 array. A $\gamma$ ray transition was observed at 198(10) keV. Based on the comparison between the experimental production cross section and theoretical predictions, the transition was assigned to the decay of the 3/2${}_1^{+}$ state to the ground state.