par De Witte, Hans;Andreyev, Andrei;Barré, Nicole;Bender, Michaël ;Cocolios, Thomas;Dean, Sarah;Fedorov, Dmitry;Fedoseyev, Valentin;Fraile, Luis Mario;Franchoo, Serge;Hellemans, Veerle ;Heenen, Paul-Henri ;Heyde, Kris;Huber, Gerhard;Huyse, Mark;Jeppessen, H.;Köster, Ulli;Kunz, Peter;Lesher, S.R.;Marsh, Bruce;Mukha, Ivan;Roussière, Brigitte;Sauvage, Jocelyne;Seliverstov, Maxim;Stefanescu, I.;Tengborn, E.;Van De Vel, Karen;Van De Walle, J.;Van Duppen, Piet;Volkov, Yu
Référence Physical review letters, 98, 11, 112502
Publication Publié, 2007-03
Référence Physical review letters, 98, 11, 112502
Publication Publié, 2007-03
Article révisé par les pairs
Résumé : | The shape of exotic even-mass Pb182-190 isotopes was probed by measurement of optical isotope shifts providing mean square charge radii (δ r2). The experiment was carried out at the isolde (cern) on-line mass separator, using in-source laser spectroscopy. Small deviations from the spherical droplet model are observed, but when compared to model calculations, those are explained by high sensitivity of δ r2 to beyond mean-field correlations and small admixtures of intruder configurations in the ground state. The data support the predominantly spherical shape of the ground state of the proton-magic Z=82 lead isotopes near neutron midshell (N=104). © 2007 The American Physical Society. |