Analysis of excited states in 13C and their cluster structure

An accurate understanding of the spectroscopy of 13 C is key to understand clustering phenomena in light nuclear systems. In this nucleus, many theoretical models predict the existence of α-cluster configurations, stabilized by the presence of an extra neutron. Despite of its importance, the spectroscopy of13 C is still affected by ambiguities, demanding for new data against which benchmarking the models. We improve the knowledge on the 13 C level scheme by means of a comprehensive R-matrix analysis of several experimental data sets. Our new spectroscopic information contributes to solve existing ambiguities in 13 C structure and will serve a valid benchmark for theoretical models attempting to describe clustering in neutron rich systems.