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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Hauptvorträge

HK 42.1: Invited Talk

Friday, March 14, 2008, 08:30–09:00, 1B/C

Exploring the nuclear landscape with laser-spectroscopy at ISOLDE — •Magdalena Kowalska¹, Klaus Blaum^2,3, Dana Borremans⁴, Kieran Flanagan⁴, Christopher Geppert², Jörg Krämer², Peter Lievens⁴, Rainer Neugart², Gerda Neyens⁴, Wilfried Nörtershäuser², Nele Vermeulen⁴, and Deyan Yordanov^2,4 — ¹CERN — ²Universität Mainz — ³GSI — ⁴Katholieke Universiteit Leuven

Ground-state properties of nuclei - spins, magnetic dipole and electric quadrupole moments, and charge radii - provide crucial information on nuclear single-particle and collective behaviour, and are particularly valuable in the context of shell closures and halo effects. They have been studied successfully for many exotic nuclei with the COLLAPS setup located at ISOLDE/CERN, which uses optical excitation or pumping of atoms/ions with laser light together with the hyperfine interaction of the nucleus with the shell electrons, external magnetic fields or electric crystal fields. Recent studies concentrated on light- and medium-mass regions: the quadrupole moment of halo ¹¹Li; spins and magnetic moments of neutron-deficient ²¹Mg around Z=N line and neutron-rich ^31,33Mg inside the ’island of inversion’; and spins, magnetic and quadrupole moments, and charge radii of neutron-rich Cu isotopes including ⁶⁸⁻⁷²Cu. I will present the technique and setup, the physics motivation for the above measurements, as well as the experimental results and their interpretation.