Hubert Grawe

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The monopole effect of the tensor force is presented, exhibiting how spherical single-particle energies are shifted as protons or neutrons occupy certain orbits. An analytic relation for such shifts is shown, and their general features are explained intuitively. Single-particle levels are shown to change in a systematic and robust way, by using the pi + rho(More)
Sn, the heaviest self conjugate doubly magic nucleus, lies at the proton drip-line. In this region of nuclei changes in the shell structure and the onset of the collectivity are predicted to be driven exclusively by the drift of the single-particle states and the proton-neutron interaction between identical shell model orbitals [1]. The latter is caused by(More)
The neutron-rich (66,68)Ni have been produced at GANIL via interactions of a 65.9A MeV 70Zn beam with a 58Ni target. Their reduced transition probability B(E2;0(+)(1)-->2+) has been measured for the first time by Coulomb excitation in a (208)Pb target at intermediate energy. The B(E2) value for (68)Ni(40) is unexpectedly small. An analysis in terms of large(More)
The stability and spontaneous decay of naturally occurring atomic nuclei have been much studied ever since Becquerel discovered natural radioactivity in 1896. In 1960, proton-rich nuclei with an odd or an even atomic number Z were predicted to decay through one- and two-proton radioactivity, respectively. The experimental observation of one-proton(More)
New isomeric states in the neutron-rich nuclei near the Z=28 and N=40 shell closures have been identi ed among the reaction products of a 60.3 A MeV 86Kr beam on a natNi target. Their main decay properties have been measured. For most of the studied nuclei, experimental information about the excited states has been obtained for the rst time. The isomers(More)
A measurement of the reduced transition probability for the excitation of the ground state to the first 2+ state in 104Sn has been performed using relativistic Coulomb excitation at GSI. 104Sn is the lightest isotope in the Sn chain for which this quantity has been measured. The result is a key point in the discussion of the evolution of nuclear structure(More)
P. Boutachkov,1,* M. Górska,1 H. Grawe,1 A. Blazhev,2 N. Braun,2 T. S. Brock,3 Z. Liu,4 B. S. Nara Singh,3 R. Wadsworth,3 S. Pietri,1 C. Domingo-Pardo,1 I. Kojouharov,1 L. Cáceres,1 T. Engert,1 F. Farinon,1 J. Gerl,1 N. Goel,1 J. Grbosz,5 R. Hoischen,6 N. Kurz,1 C. Nociforo,1 A. Prochazka,1 H. Schaffner,1 S. J. Steer,7 H. Weick,1 H.-J. Wollersheim,1 T.(More)
Deep-inelastic collisions of a 208Pb beam on a 208Pb target were performed using the ATLAS accelerator at Argonne National Laboratory. The Gammasphere detector array was used for the detection of prompt and delayed gamma-rays of the reaction products. 207Tl is one proton away from the 208Pb doubly-magic nucleus. Its low-energy level structure is dominated(More)
J. Döring, C. Plettner, V. Belleguic, H. Grawe, L. Batist, R. Borcea, M. Górska, N. Harrington, Z. Janas, R. Kirchner, C. Mazzocchi, P. Monroe, E. Roeckl, Ch. Schlegel, K. Schmidt, R. Schwengner GSI, D-64291 Darmstadt, FZ Rossendorf, D-01314 Dresden, Université de Paris-Sud, F-91405 Orsay, PNPI, RU-188-350 Gatchina, IKS KU Leuven, B-3001 Leuven, University(More)