Orateur
Description
Exploring ground-state nuclear properties is a powerful tool to investigate our understanding of the nuclear structure. Laser spectroscopy gives access to model-independent measurements of the ground-state properties (spin, nuclear electromagnetic moments, changes in the charge radius) of short-lived (≥10 ms) nuclei, providing an excellent benchmark for theoretical predictions close to magic shell closures far from stability [1]. Moreover, combining laser spectroscopy and state-of-the-art quantum chemistry can provide insight into the nuclear magnetization distribution parameter [2].
One region of high interest is the region between heavily deformed Zr(Z = 40) and near-spherical Sn(Z = 50), a region with many competing nuclear configurations, and thus the subject of recent investigations: tin [3], indium [1], cadmium [4], palladium [5], and silver [6-9] studies have been successfully performed before, and neutron-rich
silver has been studied recently at ISOLDE/CERN [10] and IGISOL in Jyväskylä [8, 9].
I will present the laser spectroscopy setup at IGISOL and the CRIS technique at ISOLDE. A new isomeric state was discovered, and the level ordering was unambiguously assigned. The nuclear spin and electromagnetic properties of the ground state and isomeric states are deduced. These data provide a benchmark for state-of-the-art nuclear
models, further broadening our knowledge in this region of the nuclear chart. Further, I will present an outlook on BW effect studies in silver as a probe to the nuclear magnetization distribution.
This work is supported by the FWO-Vlaanderen (Belgium).
References
[1] A. Vernon et al., Nature 607 (2022) 260-265.
[2] L. V. Skripnikov and A. E. Barzakh, PRC 109 (2024) 024315.
[3] D. Yordanov et al., Comm. Phys. 3 (2020) 2399-3650.
[4] D. Yordanov et al., PRL 110 (2013) 192501.
[5] S. Geldhof et al., PRL 128 (2022) 152501.
[6] M. Reponen et al., Nat. Comm. 12 (2021) 4596.
[7] R. Ferrer et al., PLB 728 (2014) 191-197.
[8] R.P. de Groote et al. PLB 848 (2024) 138352.
[9] B. van den Borne, et al. PRC 111 (2025) 014329.
[10] R.P. de Groote et al., CERN-INTC-2020-023 / INTC-P-551 (2020).
