Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 59: Nuclear Structure and Dynamics II

HK 59.1: Gruppenbericht

Mittwoch, 18. März 2009, 16:30–17:00, H-ZO 50

Studies of Light Unbound Nuclear Systems — •Yuliya Aksyutina — Gesellschaft für Schwerionenforschung(GSI), D-64291 Darmstadt

The results on an experiment at the SIS-FRS facility (GSI, Darmstadt, Germany) with relativistic beams of ⁸He, ¹¹Li and ¹⁴Be impinging on a liquid hydrogen target will be discussed. The experimental setup, consisting of the neutron detector LAND, the dipole spectrometer ALADIN and different types of tracking detectors, allows for a reconstruction of the momentum vectors of all reaction products in coincidence. Neutron(proton) knockout reactions lead to formation of unbound systems. Their properties are investigated by reconstructing the invariant-mass spectra as well as by studying the angular correlations between the reaction products. The observed systems are ⁷He, ⁹He, ¹⁰He, ¹⁰Li, ¹²Li, ¹³Li and ¹³Be. The talk is devoted to a discussion of the obtained results for these unbound isotopes and the physics interpretation of the data.