2016
DOI: 10.1051/epjconf/201610703004
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Search for mixed-symmetry states of nuclei in the vicinity of the double-magic nucleus208Pb

Abstract: Abstract. In this work we present the results from two experiments dedicated to search for quadrupolecollective isovector valence-shell excitation, the states with so-called mixed proton-neutron symmetry (MSS), in nuclei around the doubly magic nucleus 208 Pb. 212 Po was studied in an α-transfer reaction. 204 Hg was studied in an inverse kinematics Coulomb excitation reaction on a carbon target. Both experiments provide indications for existence of one-phonon MSSs. Those are the first experimentally identifi… Show more

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“…Due to this feature it was believed that the magnetic properties, in general, show up in deformed systems. This is, however, not true since in vibrational and transitionl nuclei there are states of mixed proton-neutron symmetries, which decay with strong M 1 transition rates (about 1µ 2 N ) to the low lying symmetric states [11,12,13,14,15,16,17,18,19]. This is also not supported experimentally, due to the magnetic dipole bands which appear in near spherical nuclei.…”
Section: Magnetic Bandsmentioning
confidence: 94%
“…Due to this feature it was believed that the magnetic properties, in general, show up in deformed systems. This is, however, not true since in vibrational and transitionl nuclei there are states of mixed proton-neutron symmetries, which decay with strong M 1 transition rates (about 1µ 2 N ) to the low lying symmetric states [11,12,13,14,15,16,17,18,19]. This is also not supported experimentally, due to the magnetic dipole bands which appear in near spherical nuclei.…”
Section: Magnetic Bandsmentioning
confidence: 94%