From first principles to nuclear ground-state properties of the Sb (Z = 51) isotopic chain

by Simon Lechner (CERN, TU Wien)

Thursday 21 Jan 2021, 14:15 → 15:15 Europe/Zurich

CERN

In recent years, ab-initio methods for calculating low-energy nuclear properties have made huge advancements [1] and are now capable of exploring the tin region. With one proton on top of tin, the antimony (Sb) isotopic chain is the first element above Z = 50 for which ab-initio calculations, using the VS IMSRG method [1], have been performed for all isotopes from N = 50 to N = 82, including ground- and low-lying states.

However, only scarce experimental data on Sb is available in literature, especially on quadrupole moments and charge radii [2]. Hence, at COLLAPS, hyperfine spectra of 112-134Sb (N = 61 – 83), including many isomers, were measured by high-resolution collinear laser spectroscopy for the first time. From the obtained hyperfine structure, nuclear observables such as nuclear spins, magnetic dipole moments, electric quadrupole moments and charge radii are extracted.

This talk will present these new results, and use them as benchmark for state-of-the-art ab-initio calculations.

[1] S. Ragnar Stroberg et al., Annual Review of Nuclear and Particle Science 69:1, 307-362 (2019) H. Hergert, Front. Phys., https://doi.org/10.3389/fphy.2020.00379 (2020)

[2] T.J. Mertzimekis et al., Nucl. Instrum. Meth. Phys. Res. A 807, 56 (2016) N.J. Stone, INDC(NDS)-0650 (2013) P. Raghavan, Atomic data and nuclear data tables 42, 189 (1989)