Probing exotic structure using one-nucleon transfer reactions

Abstract

Understanding nuclear structure and the nuclear force which drives the underlying changes in orbital spacing are topics of high priority in current nuclear physics research. Tracking single-particle excitations is essential for understanding the nature of weakly bound nuclei and test various nuclear models. There are many experimental methods to study nuclear structure the a very compelling one is one-nucleon transfer reactions. Among light nuclei, Be isotopes provide a great testing ground for various nuclear models, thanks to their small number of valence nucleons and rapidly changing exotic structure. The p-wave normal configuration in low-lying states of 11Be and s-wave intruder configuration in the 0+ states of 12Be will be discussed in light of one-nucleon transfer reactions. Particularly, the 12Be ground state is shown to be dominated by a d-wave component, which is a dramatic change compared to the 11Be ground state, where the s-wave single-particle component governs the formation of the 11Be one- neutron halo. Furthermore, preliminary results of low-lying resonances in 12Be having dominant cross-shell neutron configurations will also be presented along with Gamow shell model (GSM) and Gamow coupled channel (GCC) calculations, which shed light on the three-body structure of 12Be and the effect of coupling to the continuum. The AT-TPC and SOLARIS coupled to reaccelerated beams at FRIB will open ever increasing opportunities for using single-nucleon transfer reactions to probe the single- particle structure of exotic nuclei. Some of these ideas will be discussed based on future experiments prospects. Download AbstractPresentation Slides