Early Onset of Ground State Deformation in Neutron Deficient Polonium Isotopes
T. E. CocoliosISOLDE, CERN, CH-1211 Geneva 23, SwitzerlandW. DextersInstituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, BelgiumM. D. SeliverstovPetersburg Nuclear Physics Institute, 188350 Gatchina, RussiaA. N. AndreyevSchool of Engineering and Science, University of West Scotland, Paisley, PA1 2BE, United Kingdom and Scottish Universities Physics Alliance (SUPA)S. 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. VenhartKU LeuvenS. G. ZemlyanoyJoint Institute of Nuclear Research, 141980 Dubna, Moscow Region, RussiaM. BenderInstitut National de Physique Nucléaire et de Physique des ParticulesP.-H. HeenenService de Physique Nucléaire Théorique, Université Libre de Bruxelles, B-1050 Bruxelles, Belgium
2011en
ABI
Annotatsiya
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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