Search for mixed-symmetry states in $^{212}$Po

D. Kocheva G. Rainovski J. Jolie N. Pietralla C. Stahl P. Petkov A. Blazhev A. Hennig A. Astier 1 T.. Braunroth L. Cortes A. Dewald M. Djongolov C. Fransen K. Gladnishki V. Karayonchev J. Litzinger C. Muller-Gatermann M. Scheck P. Scholz C. Schramm P. Tolle V. Werner W. Witt D. Wolk P. van Isacker 2
1 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
2 GANIL - Grand Accélérateur National d'Ions Lourds
Abstract : In this work we present an experiment dedicated to searching for quarupole- collective isovector valence-shell excitation — the states with so-called mixed proton-neutron symmetry (MSSs), in the nucleus 212Po. The states of interest were populated and studied by an α-transfer reaction. The experiment provides indication for existence of one-phonon MSS in the nucleus 212Po which is the first experimentally identified MSS in the region around double magic nucleus 208Pb.
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D. Kocheva, G. Rainovski, J. Jolie, N. Pietralla, C. Stahl, et al.. Search for mixed-symmetry states in $^{212}$Po. XXI International School on Nuclear Physics and Applications & International Symposium on Exotic Nuclei, Sep 2015, Varna, Bulgaria. pp.012023, ⟨10.1088/1742-6596/724/1/012023⟩. ⟨in2p3-01346778⟩

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