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HK: Hadronen und Kerne

HK 50: Spectroscopy: 130 ≤ A ≤ 180

HK 50.6: Talk

Wednesday, March 18, 1998, 15:45–16:00, D

Population of n-rich nuclei with ⁷Li-induced Incomplete Fusion reaction — •A. Dietrich, H. Bauer, B. Binder, Ch. Gund, T. Härtlein, D. Pansegrau, and D. Schwalm — MPI für Kernphysik Heidelberg

The Incomplete Fusion reaction ⁷Li→¹⁶⁰Gd can be used to do spectroscopy of high spin states in n-rich nuclei, which are not accessible in standard (HI,xn)-reactions [1].
In order to study this reaction systematically, a 3mg/cm² thick Gd-target was bombarded by a ⁷Li beam at several energies from 35 MeV up to 67 MeV provided by the MP-tandem postaccelerator facility of the MPI-K in Heidelberg. With increasing energy an increasing importance of the breakup of the projectile into a fast forward-peaked light particle and a massive fragment, which fuses with the target nucleus, could be established.
A segmented Δ E-E-telescope was used together with several Ge-detectors for selecting the different reaction channels and for measuring the angular- and energy distribution of the light reaction fragments (typically p, d and t). In addition, the absolute cross sections for populating the individual reaction channels and the angular momentum distribution in the residual nuclei could be extracted.
T. Härtlein et al., DPG Spring Conference 1998, Bochum