Bonn 2020 – wissenschaftliches Programm
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HK 17.4: Vortrag
Dienstag, 31. März 2020, 18:00–18:15, J-HS E
Study of the magnetic dipole respone of 58Ni — •Isabelle Brandherm1, Johann Isaak1, Peter von Neumann-Cosel1, Maximilian Spall1, Jonny Birkhan1, Sergej Bassauer1, Maxim Singer1, Antonio d’Alessio1, Hiroaki Matsubara2, and Atshushi Tamii2 — 1Institut für Kernphysik, TU Darmstadt, Darmstadt, Germany — 2RCNP, Osaka, Japan
A high resolution inelastic proton scattering experiment on 58Ni at extreme forward angles, was performed at RCNP. This method has been proven to be an excellent tool to study the dipole response of nuclei. Measurements performed at afew hundred MeV incident energy and at 0∘ are particulary suited for the excitation of the isovector spin-flip M1 (IVSM1) resonance. The properties of the IVSM1 are e. g. used in the description of neutral-current neutrino interactions in supernovae. Another interesting phenomena is the so called quenching, which describes a systematically overestimation of the experimentally obtained magnetic dipole strength by microscopic model predictions. In this work first result towards an extraction of the magnetic dipole strength with a multipole decomposition analysis will be shown.
Supported by SFB 1245