Köln 2025 – wissenschaftliches Programm

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PV: Plenarvorträge

PV I

PV I: Plenarvortrag

Montag, 10. März 2025, 13:15–14:00, Kurt-Alder HS Chemie

Magic Moments: Exotic Calcium Isotopes in Laser Light — •Wilfried Nörtershäuser — TU Darmstadt, Institut für Kernphysik

The chain of calcium isotopes has been of interest for long since it is unique in having two stable doubly magic isotopes and a particular pattern of charge radii with those of the doubly magic ^40,48Ca nuclei being similar despite the 40% difference in neutron number. Improvements in experimental techniques allowed us to expand the knowledge of ground-state nuclear structure from ³⁶Ca almost at the neutron dripline up to the neutron-rich ⁵⁴Ca during the last years. This included laser spectroscopy of ⁵⁴Ca at a production rate of less than 1 ion/s at ISOLDE/CERN. Progress has also been made in laser spectroscopy in the neighboring elements and results are used to benchmark nuclear structure theory and provide a challenge for ab initio, density functional, and nuclear shell-model calculations.

Keywords: nuclear charge radius; nuclear moments; laser spectroscopy; magic numbers