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HK: Fachverband Physik der Hadronen und Kerne
HK 50: Kernphysik / Spektroskopie II
HK 50.4: Vortrag
Freitag, 14. März 2008, 15:00–15:15, 2G
Study of the nuclear matter distribution of exotic Be and B nuclei — •S. Ilieva1, F. Aksouh1, G.D. Alkhazov2, K.-H. Behr1, A. Bleile1, A. Bruenle1, L. Chulkov3, A.V. Dobrovolsky2, P. Egelhof1, H. Geissel1, G. Ickert1, A. Inglessi1, R. Kanungo1, A.V. Khanzadeev2, O. Kiselev1, G.A. Korolev2, X.C. Le1, Y. Litvinov1, W. Niebur1, C. Nociforo1, D.M. Seliverstov2, L.O. Sergeev2, V.A. Volkov3, A.A. Vorobyov2, H. Weick1, V.I. Yatsoura2, and A.A. Zhdanov2 — 1Gesellschaft für Schwerionenforschung (GSI), 64291 Darmstadt, Germany — 2Petersburg Nuclear Physics Institute (PNPI), 188300 Gatchina, Russia — 3Kurchatov Institute, 123182 Moscow, Russia
Exotic nuclei close to the drip-lines have revealed an interesting type of nuclear structure with a widely extended matter distribution of loosely bound valence nucleons(halo) surrounding a compact core.
In the present work the differential cross sections for small-angle proton elastic scattering on the 12, 14Be and 8B isotopes were analyzed. The experiment was performed at energies near 700 MeV/u in inverse kinematics using the active target detector IKAR at GSI, Darmstadt.
The measured cross sections were analyzed with the aid of the Glauber multiple-scattering theory. Nuclear matter radii and radial matter distributions have been deduced. The nuclear matter distribution for 14Be exhibits a pronounced neutron halo structure while for 8B a proton halo is observed. The obtained data allow for a test of various theoretical model calculations of the structure of the studied isotopes.