Search for mixed-symmetry states in 212Po

21st International School on Nuclear Physics and Applications & International Symposium on Exotic Nuclei

Kocheva, D.^1 ; Rainovski, G.^1 ; Jolie, J.^2 ; Pietralla, N.^3 ; Stahl, C.^3 ; Petkov, P.^4 ; Blazhev, A.^2 ; Hennig, A.^2 ; Astier, A.^5 ; Braunroth, Th.^2 ; Cortes, L.^3 ; Dewald, A.^2 ; Djongolov, M.^1 ; Fransen, C.^2 ; Gladnishki, K.^1 ; Karayonchev, V.^2 ; Litzinger, J.^2 ; Müller-Gatermann, C.^2 ; Scheck, M.^3 ; Scholz, Ph.^2 ; Schramm, C.^2 ; Tölle, P.^2 ; Werner, V.^2 ; Witt, W.^2 ; Wölk, D.^2 ; Van Isacker, P.^6

Faculty of Physics, St. Kliment Ohridski University of Sofia, Sofia

1164, Bulgaria^1

Institut für Kernphysik, Universität zu Köln, Köln

D-50937, Germany^2

Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt

D-64289, Germany^3

Bulgarian Academy of Sciences, Institute for Nuclear Research and Nuclear Energy, Sofia

1784, Bulgaria^4

CSNSM, IN2P3/CNRS and Universite Paris-Sud, Orsay Campus

F-91405, France^5

Grand Accèlèrateur National d'Ions Lourds, CEA/DSM-CNRS/IN2P3, BP 55027, Caen Cedex 5

F-14076, France^6

关键词: Mixed symmetry state;    Transfer reaction;    Valence shells;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/724/1/012023/pdf
DOI  :  10.1088/1742-6596/724/1/012023

来源: IOP

【 摘 要 】

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 nucleus212Po. 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 nucleus212Po which is the first experimentally identified MSS in the region around double magic nucleus208Pb.