Early Onset of Ground State Deformation in Neutron Deficient Polonium Isotopes
T. E. CocoliosInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumW. DextersInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumM. D. SeliverstovInstitut für Physik, Johannes Gutenberg Universität, D-55099 Mainz, GermanyA. N. AndreyevInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumS. AntalicDepartment of Physics and Biophysics, Comenius University, Bratislava 842 48, SlovakiaA. E. BarzakhPetersburg Nuclear Physics Institute, 188350 Gatchina, RussiaB. BastinInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumJ. BüscherInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumI. G. DarbyInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumД. В. ФедоровPetersburg Nuclear Physics Institute, 188350 Gatchina, RussiaV. N. FedosseyevEN Department, CERN, CH-1211 Geneva 23, SwitzerlandK. T. FlanaganCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse, F-91405 Orsay, FranceS. FranchooInstitut de Physique Nucléaire d’Orsay, F-91406 Orsay, FranceS. FritzscheDepartment of Physics, P.O. Box 3000, Fin-90014 University of Oulu, FinlandGeorge W. HuberInstitut für Physik, Johannes Gutenberg Universität, D-55099 Mainz, GermanyM. HuýseInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumM. KeupersInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumU. KösterInstitut Laue-Langevin, F-38042 Grenoble, FranceYu. A. KudryavtsevInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumE. ManéDepartment of Physics, University of Manchester, Manchester, M60 1AD, United KingdomB. A. MarshEN Department, CERN, CH-1211 Geneva 23, SwitzerlandP. L. MolkanovPetersburg Nuclear Physics Institute, 188350 Gatchina, RussiaR. D. PageOliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United KingdomA. Marica SjoedinEN Department, CERN, CH-1211 Geneva 23, SwitzerlandI. StefanInstitut de Physique Nucléaire d’Orsay, F-91406 Orsay, FranceJ. Van de WalleISOLDE, CERN, CH-1211 Geneva 23, SwitzerlandP. Van DuppenInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumM. VenhartInstitute of Physics, Slovak Academy of Sciences, Bratislava 845 11, SlovakiaS. G. ZemlyanoyJoint Institute of Nuclear Research, 141980 Dubna, Moscow Region, RussiaM. BenderUniversité Bordeaux I, CNRS/IN2P3, Centre d’Etudes Nucléaires de Bordeaux Gradignan, UMR5797, F-33175 Gradignan, FranceP.-H. HeenenService de Physique Nucléaire Théorique, Université Libre de Bruxelles, B-1050 Bruxelles, Belgium
2011en
ABI
Аннотация
In-source resonant ionization laser spectroscopy of the even-A polonium isotopes (192-210,216,218)Po has been performed using the 6p(3)7s (5)S(2) to 6p(3)7p (5)P(2) (λ=843.38 nm) transition in the polonium atom (Po-I) at the CERN ISOLDE facility. The comparison of the measured isotope shifts in (200-210)Po with a previous data set allows us to test for the first time recent large-scale atomic calculations that are essential to extract the changes in the mean-square charge radius of the atomic nucleus. When going to lighter masses, a surprisingly large and early departure from sphericity is observed, which is only partly reproduced by beyond mean field calculations.
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