Observation of yrast states in neutron-rich 41 Cl

The yrast decay sequence of ${}^{41}\mathrm{Cl},$ populated in deep inelastic processes produced by the interaction of 234 MeV ${}^{37}\mathrm{Cl}$ ions with a ${}^{160}\mathrm{Gd}$ target, has been studied using the highly sensitive EUROBALL IV $\ensuremath{\gamma}$-ray detector array. Yrast states are established for the first time at energies of 130 and 891 keV.