Search for mixed-symmetry states of nuclei in the vicinity of the double-magic nucleus 208Pb

D. Kocheva; R. Stegmann; G. Rainovski; J. Jolie; N. Pietralla; C. Stahl; P. Petkov; A. Blazhev; A. Hennig; C. Bauer; Th. Braunroth; M.P. Carpenter; L. Cortes; A. Dewald; M. Djongolov; C. Fransen; K. Gladnishki; R.V.F. Janssens; V. Karayonchev; M. Lettmann; C.J. Lister; J. Litzinger; Th. Möller; C. Möller-Gatermann; M. Scheck; Ph. Scholz; C. Schramm; P. Thöle; V. Werner; D. Wölk; S. Zhu; P. Van Isacker

doi:10.1051/epjconf/201610703004

All issues

Volume 107 (2016)

EPJ Web of Conferences, 107 (2016) 03004

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 107, 2016 International Conference on Nuclear Structure and Related Topics (NSRT15)


Article Number		03004
Number of page(s)		6
Section		Nuclear Spectroscopy – Experiment and Theory
DOI		https://doi.org/10.1051/epjconf/201610703004
Published online		19 January 2016

EPJ Web of Conferences 107, 03004 (2016)
https://doi.org/10.1051/epjconf/201610703004

Search for mixed-symmetry states of nuclei in the vicinity of the double-magic nucleus ²⁰⁸Pb

D. Kocheva¹, R. Stegmann², G. Rainovski¹^a, J. Jolie³, N. Pietralla², C. Stahl², P. Petkov⁴, A. Blazhev³, A. Hennig³, C. Bauer², Th. Braunroth³, M.P. Carpenter⁵, L. Cortes², A. Dewald³, M. Djongolov¹, C. Fransen³, K. Gladnishki¹, R.V.F. Janssens⁵, V. Karayonchev³, M. Lettmann², C.J. Lister⁵, J. Litzinger³, Th. Möller², C. Möller-Gatermann³, M. Scheck²^b, Ph. Scholz³, C. Schramm², P. Thöle³, V. Werner², D. Wölk³, S. Zhu⁵ and P. Van Isacker⁶

¹ Faculty of Physics, St. Kliment Ohridski University of Sofi, 1164 Sofia, Bulgaria
² Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
³ Institut für Kernphysik, Universität zu Köln, D-50937 Köln, Germany
⁴ Bulgarian Academy of Sciences, Institute for Nuclear Research and Nuclear Energy, 1784 Sofi, Bulgaria
⁵ Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
⁶ Grand Accélérateur National d’Ions Lourds, CEA/DSM-CNRS/IN2P3, BP 55027, F-14076, Caen Cedex 5, France

^a rig@phys.uni-sofia.bg
^b Present address: University of the West of Scotland, PA1 2BE Paisley, United Kingdom and Scottish Univ. Phys. Alliance, Glasgow G12 8QQ, Scotland

Published online: 19 January 2016

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 ²⁰⁸Pb. ²¹²Po was studied in an α-transfer reaction. ²⁰⁴Hg 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 identified MSSs in the mass A ≈ 208 region.

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