Notre Dame Nuclear Physics Seminar: Dr. Bernhard Maass, Argonne National Laboratory

The ATLAS facility at Argonne National Laboratory offers excellent opportunities to utilize slow and stopped radioactive beams for nuclear-structure research. The newly commissioned NuCARIBU source delivers low-energy beams of neutron-induced U-235 fission fragments, enabling a broad program of precision experiments. In addition, the upcoming N=126 factory will provide access to heavy isotopes in the lead region produced via multinucleon-transfer reactions, opening new avenues for mass measurements and laser spectroscopy.

 

I will present recent progress in the laser-spectroscopy program at ATLAS. This includes first results on the charge radii of triaxial neutron-rich ruthenium isotopes [1], as well as an update on ongoing measurements using NuCARIBU beams. Finally, I will outline future developments aimed at extending high-precision laser spectroscopy at ATLAS, including planned activities at the N=126 factory and a longer-term perspective on the program.

 

This project is supported by DFG – Project-Id 279384907-SFB 1245, BMBF 05P19RDFN1, and by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357, with resources of ANL’s ATLAS facility, an Office of Science User Facility.