Speaker
Description
At GANIL-SPIRAL2 and LPC Caen the Super Separator Spectrometer-Low Energy Branch (S$^3$-LEB) [1] project is under development to study exotic nuclei by In-Gas Laser Ionization Spectroscopy (IGLIS) to extract ground-state properties, such as nuclear mean-square charge radii $δ
A crucial aspect of the S$^3$-LEB setup is the laser system, which has been extensively developed at GISELE offline laser laboratory for the purpose of performing mid- to high-resolution spectroscopy [4]. Having multiple laser systems with different resolving powers is necessary for performing measurements either in-gas-cell or in-gas-jet environments. In order to resolve hyperfine structures and extract nuclear properties of interest, one requires wide scanning range, narrow spectral linewidths, adequate temporal and spatial laser overlap and reliable recording of the measurement parameters. The progressive development of the titanium:sapphire laser systems in our laboratory has led to successful measurements of a few elements of interest for the day-1 experimental program like erbium, tin and palladium. This development work and latest laser-spectroscopy results will be presented.
[1] F. Déchery et al, Nucl. Instrum. Meth. B 376, 125 (2016). doi: 10.1016/j.nimb.2016.02.036
[2] R. Ferrer et al. Phys. Rev. Res. 3, 043041 (2021). doi:10.1103/PhysRevResearch.3.043041.
[3] R. Ferrer et al. Nat. Commun. 8, 14520 (2017). doi: 10.1038/ncomms14520
[4] J.Romans et al., Atoms 10(1), 21 (2022), doi: 10.3390/atoms10010021
