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High-Spin States of Po-212,Po-213,Po-214: Probing the Valence Space beyond Pb-208

A. Astier 1 M.G. Porquet 1
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : Excited states in Po-212,Po-213,Po-214 have been populated using the 18O+Pb-208 reaction at 85 MeV beam energy and studied with the Euroball IV gamma multidetector ariay. Their level schemes have been widely extended at high spin. The configurations of the Po-213,Po-214 yrast states are discussed using results of empirical shell-model calculations and by analogy with the neighboring nuclei. The nuclear structure Po-212 is more complex, due to the competition of shell-model configurations with alpha-Pb-208 cluster configurations. The new information constitutes an important step for the determination of the effective nucleon-nucleon interactions beyond N = 126.
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Submitted on : Thursday, December 6, 2012 - 12:13:03 PM
Last modification on : Friday, November 20, 2020 - 9:46:03 AM

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A. Astier, M.G. Porquet. High-Spin States of Po-212,Po-213,Po-214: Probing the Valence Space beyond Pb-208. Frontier Issues in Physics of Exotic Nuclei : Proceedings of the Yukawa International Seminar 2011 (YKIS2011) and Long-Term Workshop on Dynamics and Correlations in Exotic Nuclei (DCEN2011), Oct 2011, Kyoto, Japan. pp.263-268, ⟨10.1143/PTPS.196.263⟩. ⟨in2p3-00761766⟩

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