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HK: Physik der Hadronen und Kerne

HK 47: Heavy Ions VI

HK 47.1: Gruppenbericht

Donnerstag, 14. März 2002, 16:00–16:30, E

Investigation of nuclear structure of light nuclei far from the stability line — •Haik Simon — Institut für Kernphysik, Technische Universität Darmstadt

The study of exotic nuclei – far from the valley of β-stability – has become one of the main topics in modern nuclear structure physics. Results of experimental investigations probing the single particle and cluster structure of light exotic nuclei are presented and consequences for nuclear models are drawn. Selected examples of experiments performed at GSI with relativistic secondary beams with energies between 0.2-1.5 GeV/nucleon are given, where cross sections, momentum distributions, angular and energy correlations after break-up reactions have been measured. Momentum distributions of the charged fragments, especially in coincidence with γ radiation that is emitted if a substantial core polarisation is present, provide first information about the single particle structure of the reacting projectiles whereas detailed spectroscopic information for the ground state and continuum structure of projectiles and intermediate, unbound systems in the decay channels can be obtained using fragment-neutron correlation measurements in addition. Experiments performed at ISOLDE/CERN investigating the decay probabilities into states of the daughter nuclei with known structure represent a different approach to determine the structure of the decaying systems. This will be discussed for the bound systems ^6,8He, ¹¹Li, ¹⁴Be, ⁸B and ¹⁹C as well as for the unbound systems ^5,7He, ¹⁰Li and ¹³Be.
Supported by BMBF (06DA915I) and GSI (DARIK).