Seminar Details

In-Gas Laser Ionization and Spectroscopy of Rare Isotopes

Rafael Ferrer, Leuven Isotope Separator On-Line (LISOL) Facility
Wednesday, July 9, 4:10 PM - Nuclear Science Seminar
NSCL Lecture Hall

The In-Gas Laser Ionization and Spectroscopy (IGLIS) technique is employed at the Leuven Isotope Separator On-Line (LISOL) facility to produce highly-pure radioactive beams and obtain important information on their ground- and excited-state properties, as e.g. mean-square charge radii, magnetic dipole moments and nuclear spins. In-gas-cell laser spectroscopy studies have been performed on neutron-deficient copper, silver, and very recently, actinium isotopes. These last experiments on the heavier mass region have allowed us to efficiently produce beams of 212Ac to 215Ac, in the N=126 shell closure, and resolve the hyperfine structure of these nuclei for the 2D3/2 4P5/2 transition at 438 nm. Unlike in-gas cell laser spectroscopy studies, laser ionization in a low-temperature and low-density supersonic gas jet allows eliminating the pressure broadening and improving the spectral resolution by at least one order of magnitude, as recently demonstrated in off-line experiments at LISOL on the stable copper isotopes. In this talk the most recent results obtained at LISOL will be presented. In addition, the experimental developments required to perform in-gas-jet laser spectroscopy studies on exotic nuclei in the IGLIS setup that will be linked to the Superconducting Separator Spectrometer (S3) of the SPIRAL2 facility (GANIL) will be summarized.