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HK: Fachverband Physik der Hadronen und Kerne

HK 6: Structure and Dynamics of Nuclei II

HK 6.1: Group Report

Monday, March 11, 2024, 16:45–17:15, HBR 19: C 5b

Nuclear charge radius measurements in ³²Si at FRIB — •Kristian König for the BECOLA collaboration — TU Darmstadt, Germany — Michigan State University, USA

The nuclear charge radius of ³²Si was determined from isotope shift measurements performed at the collinear laser spectroscopy setup BECOLA at the Facility for Rare Isotope Beams (FRIB, Michigan State University). The extracted charge radius was compared to ab initio nuclear lattice effective field theory, valence-space in-medium similarity renormalization group and mean field calculations. Furthermore, the charge radius of ³²Si completes the radii of the mirror pair ³²Ar - ³²Si, whose difference was correlated to the slope L of the symmetry energy in the nuclear equation of state [1]. In this talk the BECOLA facility will be presented, the ³²Si results will be discussed and an outlook for future experiments at FRIB will be given.

This work was supported in part by the National Science Foundation, Grants No. PHY-21-11185 and the DFG, Project-Id 279384907-SFB 1245.

[1] arXiv:2309.02037 [nucl-ex]

Keywords: Collinear Laser Spectroscopy; Silicon; Charge Radius; Nuclear Equation of State