• Citer

Early onset of ground state deformation in neutron deficient polonium isotopes

par Cocolios, Thomas;Dexters, Wim;Seliverstov, Maxim;Andreyev, Andrei;Bastin, B.;Büscher, Jeroen;Darby, I.G.;Huyse, Mark;Keupers, M.;Kudryavtsev, Yu;Van De Walle, Jean;Van Duppen, Piet;Venhart, M.;Barzakh, Anatoli A.E.;Fedorov, Dmitry;Molkanov, P.L. P.L.;Huber, Gerhard;Antalic, S.;Marsh, Bruce;Sjoedin, A.M. A.M.;Fedosseyev, V.N. V.N.;Mané, E.;Flanagan, K.T. K.T.;Stefan, Iulian Gh;Franchoo, Serge;Fritzsche, Stephan;Köster, Ulli;Page, Robert;Zemlyanoy, S.G. S.G.;Bender, Michaël ;Heenen, Paul-Henri
Référence Physical review letters, 106, 5, 052503
Publication Publié, 2011-02

Article révisé par les pairs

• Détails
• Contenu

Résumé :

In-source resonant ionization laser spectroscopy of the even-A polonium isotopes Po192-210,216,218 has been performed using the 6p37s S25 to 6p37p P25 (λ=843.38nm) transition in the polonium atom (Po-I) at the CERN ISOLDE facility. The comparison of the measured isotope shifts in Po200-210 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. © 2011 American Physical Society.