Conveners
M1-4 Nuclear Structure and Astrophysics (DNP) | Structure nucléaire et astrophysique (DPN)
- Liliana Caballero Suarez
The PREX-II and CREX experiments at Jefferson Lab have completed measurements of the parity violating elastic electron scattering asymmetry from $^{208}$Pb and $^{48}$Ca targets. These asymmetries are sensitive to the weak charge radius of the nuclei, and thus to the RMS radius of the neutron distribution. In neutron-rich nuclei such as $^{208}$Pb and $^{48}$Ca, the neutrons extend to larger...
Nuclei away from the line of stability have been found to demonstrate behavior that is inconsistent with the traditional magic numbers of the spherical shell model. This has led to the concept of the evolution of nuclear shell structure in exotic nuclei, and the neutron-rich Ca isotopes are a key testing ground of these theories; there have been conflicting results from various experiments as...
Heavy element synthesis within stellar bodies typically manifests in explosive environments such as neutron star mergers. However, at the low temperature and high density conditions of a neutron star crust, degenerate neutrons provide alternate synthesis pathways compared to conventional systems. In this work, we study the effect of this degeneracy on neutron capture rates by several...
In recent years, attention has been brought to intermediate neutron capture processes, working between the rates and environmental neutron densities of the r-process and s-process, while their full contribution to abundances is not yet fully characterized. Operating in neutron densities of 10$^{13}$ - 10$^{20}$ neutrons/cm$^{3}$, the i-process and n-process have been shown in sensitivity...
Although the shell model forms the backbone of our understanding of nuclear structure, the breakdown of traditional magic numbers far from stability gives insight into the nature of the underlying nuclear interactions and acts as a tool to test existing models. Islands of inversion (IoI) in the nuclear landscape are characterized by the presence of deformed multi-particle multi-hole (npnh)...
A high precision half-life measurement was performed for the radioactive isotope, 26Na at the Isotope Separator and Accelerator (ISAC) rare-isotope beam facility at TRIUMF in Vancouver. This is the first experimental test of the high-efficiency Gamma-Ray Infrastructure for Fundamental Investigations of Nuclei (GRIFFIN) spectrometer for performing high precision (± 0.05% or better) half-life...
