Bochum 1998 – wissenschaftliches Programm
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HK: Hadronen und Kerne
HK 28: Spectroscopy: 70 ≤ A < 110
HK 28.4: Vortrag
Dienstag, 17. März 1998, 15:00–15:15, D
Particle Excitations in the N=49 Nuclei 88Y and 87Sr — •C. Borcan1, R. Schwengner1, H. Schnare1, L. K"aubler1, T. Servene1, M. Wilhelm2, A. Fitzler2, S. Kasemann2, E. Radermacher2, and P. von Brentano2 — 1Institut f"ur Kern und Hadronenphysik, FZ Rossendorf, 01314 Dresden — 2Institut f"ur Kernphysik, Universit"at zu K"oln, 50937 K"oln
High spin states of the nuclei 88Y and 87Sr have been studied via the reactions 80Se(11B,3n) and 80Se(11B,p3n), respectively. The coincidence experiment was carried out with a 45 MeV beam delivered by the FN Tandem accelerator of the University of Cologne. γ-γ coincidences were measured using the Cologne detector array OSIRIS CUBE.The level schemes have been extended up to an energy of E ≈ 8 MeV. Spins and multipole mixing ratios were derived from directional correlations of coincident gamma rays (DCO) . The structure of these nuclei is discussed and compared with neighbouring N=49 nuclei.