Berlin 2005 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 22: Postersitzung

HK 22.22: Poster

Montag, 7. März 2005, 16:30–18:00, TU MA141

Kinematically complete experiment with light neutron rich nuclei using knock-out reactions on protons — •H.T. Johansson and H. Simon — Gesellschaft für Schwerionenforschung (GSI), D–64291 Darmstadt

The S245 experiment at GSI, Darmstadt, aims at investigating the cluster structure of the exotic, multi-neutron halo nuclei ⁸He, ¹¹Li, ¹⁴Be. Secondary beams (250-300 MeV/u) of these nuclei were produced at the FRS and knockout reactions induced in a liquid hydrogen target were studied. The momenta of the recoiling proton and of charged projectile fragments are obtained by measuring scattering angles, time-of-flight, energy loss, and, in part, magnetic rigidity. Emitted neutrons are detected with the Large Area Neutron Detector [1].

Halo-neutron removal in heavy-ion induced knockout reactions were observed earlier [2]. In the present experiment, a multitude of charge-changing reactions are observed in addition; first results are presented.

This work is supported by BMBF (06 DA 115) and GSI.

[1] Th. Blaich et al., Nucl. Instr. and Meth. A 314, 136-154 (1992)

[2] H. Simon et al., Nucl. Phys. A 734, 323-326 (2004)