Early Onset of Ground State Deformation in Neutron Deficient Polonium Isotopes
- Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven (Belgium)
- Department of Physics and Biophysics, Comenius University, Bratislava 842 48 (Slovakia)
- Petersburg Nuclear Physics Institute, 188350 Gatchina (Russian Federation)
- EN Department, CERN, CH-1211 Geneva 23 (Switzerland)
- Department of Physics, University of Manchester, Manchester, M60 1AD (United Kingdom)
- Institut de Physique Nucleaire d'Orsay, F-91406 Orsay (France)
In-source resonant ionization laser spectroscopy of the even-A polonium isotopes {sup 192-210,216,218}Po has been performed using the 6p{sup 3}7s {sup 5}S{sub 2} to 6p{sup 3}7p {sup 5}P{sub 2} ({lambda}=843.38 nm) transition in the polonium atom (Po-I) at the CERN ISOLDE facility. The comparison of the measured isotope shifts in {sup 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.
- OSTI ID:
- 21532275
- Journal Information:
- Physical Review Letters, Vol. 106, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.106.052503; (c) 2011 American Institute of Physics; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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