Elsevier

Nuclear Physics A

Volume 473, Issue 1, 19 October 1987, Pages 160-178
Nuclear Physics A

Electroexcitation of 58ni: A sutdy of the fragmentation of the magnetic dipole strength

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Abstract

The distribution of the magnetic dipole strength in 58Ni in the excitation energy range Ex = 6–15 MeV has been studied with high resolution inelastic electron scattering. Altogether 47 Jπ = 1+ states have been determined. The summed Ml strength is Σ B(M1)↑ = 16.9−3.3+4.6μN2. A shell model calculation including 1p-1h excitations is used to discuss the fragmentation, the summed strength and the relative importance of spin versus orbital magnetism. By comparison with inelastic proton scattering and charge exchange reactions the isospin structure of the M l strength distribution is analysed.

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    Work supported by Deutsche Forschungsgemeinschaft.

    1

    Present address: Aristo GmbH., Hamburg, Germany.

    2

    Present address: Schenk AG, Darmstadt, Germany.

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