Bochum 1998 – scientific programme
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HK: Hadronen und Kerne
HK 6: Spectroscopy, Light Nuclei
HK 6.5: Group Report
Monday, March 16, 1998, 15:30–16:00, D
Spectroscopy of Light Exotic Nuclei Using Multi-Nucleon Transfer Reactions∗ — •H.G. Bohlen1, A. Blazevic1, B. Gebauer1, S.M. Grimes2, R. Kalpakchieva3, A. Lepine-Szily4, T.N. Massey2, W. Mittig5, W. von Oertzen1, J.M. Oliveira4, F. Oliveira5, A.N. Ostrowski6, P. Roussel-Chomaz5, S. Thummerer1, and M. Wilpert1 — 1Hahn-Meitner-Institut, Berlin — 2Ohio Univ., Athens, USA — 3FLNR, JINR, Dubna, Russia — 4IFUSP-Univ.of Sao Paulo, Sao Paulo, Brazil — 5GANIL, Caen, France — 6Univ. of Edinburgh, Edinburgh, UK
Multi-nucleon transfer reactions have been used successfully to study
neutron-rich isotopes in the light mass region between 7He and
16B. The neutron drip line could be reached through a reaction
mechanism, where protons are removed from the target
and neutrons are added. New results obtained at HMI are presented for
7He, 10Li and 10,11,12Be using 15N-induced transfer
reactions at 16 AMeV.
For 7He we observed for the first time excited states, i.e. the
1/2−-resonance, which is of interest for the
spin-orbit splitting in these light neutron-rich nuclei.
The obtained spectroscopic results on 10Li are presented, and the
structure and decay properties of 10Li- and 11Li-levels
are discussed. The Be-isotopes have been investigated to study their
cluster structure and high-lying states.
The multi-nucleon transfer mechanism has also been applied
to study the proton-rich isotope 11N, the mirror nucleus of
11Be. In this case the 12C(14N,15C)11N
reaction has been used. This measurement has been performed at Ganil.
The observed resonances are discussed and compared to results of other
experiments.
∗supported by BMBF No. 06 OB 47204 and NATO grant No. 960375