13 C is the simplest neutron-rich system that can be formed starting from three α-clusters. The study of its spectroscopy is therefore of large interest to unveil the presence of exotic structures, such as molecular rotational bands, where the α-cluster nature fully appears. Molecular bands should be characterized by very large moment of inertia, and they can be experimentally studied from the correlation between the excitation energy and the spin of 13 C states. In this work, we discuss the results of a spectroscopic investigation on 13 C states made by studying α+ 9 Be reactions at low energies. A comprehensive R-matrix fit of elastic, inelastic and reaction cross sections allows to shed light on contrasting J π assignments and to determine the partial decay widths for each reaction channel.
Cluster states in 13 C investigated with nuclear reactions induced by α particles on 9 Be
Lombardo I.
2018-01-01
Abstract
13 C is the simplest neutron-rich system that can be formed starting from three α-clusters. The study of its spectroscopy is therefore of large interest to unveil the presence of exotic structures, such as molecular rotational bands, where the α-cluster nature fully appears. Molecular bands should be characterized by very large moment of inertia, and they can be experimentally studied from the correlation between the excitation energy and the spin of 13 C states. In this work, we discuss the results of a spectroscopic investigation on 13 C states made by studying α+ 9 Be reactions at low energies. A comprehensive R-matrix fit of elastic, inelastic and reaction cross sections allows to shed light on contrasting J π assignments and to determine the partial decay widths for each reaction channel.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
