The "isospin mixing" phenomenon was measured by the study of the Isovector Giant Dipole Resonance (IVGDR) in 60Zn at two different excitation energies E∗= 47 MeV and E∗= 58 MeV. A fusion-evaporation reaction, with a beam of 30S and a target of 28Si, was used to produce the nucleus of interest. A second target of 30Si was used to produce 62Zn. For this nucleus, the mixing effect does not strongly appear in the gamma decay of the GDR and for this reason, the second reaction is necessary as reference. The experimental setup was composed of the GALILEO array (germanium detectors) coupled to large-volume LaBr3(Ce) detectors for theγ-ray measurements. An overview of the ongoing analysis and the preliminary results are presented.
Isospin symmetry in the 60Zn nucleus
Bocchi G.;Giaz A.;Leoni S.;Galtarossa F.;Goasduff A.;Testov D.;Marchi T.;Mengoni D.;Boso A.;John P. R.;Recchia F.;
2020
Abstract
The "isospin mixing" phenomenon was measured by the study of the Isovector Giant Dipole Resonance (IVGDR) in 60Zn at two different excitation energies E∗= 47 MeV and E∗= 58 MeV. A fusion-evaporation reaction, with a beam of 30S and a target of 28Si, was used to produce the nucleus of interest. A second target of 30Si was used to produce 62Zn. For this nucleus, the mixing effect does not strongly appear in the gamma decay of the GDR and for this reason, the second reaction is necessary as reference. The experimental setup was composed of the GALILEO array (germanium detectors) coupled to large-volume LaBr3(Ce) detectors for theγ-ray measurements. An overview of the ongoing analysis and the preliminary results are presented.
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