HAL - IN2P3 :: [in2p3-00142862, version 1] Nuclear Charge Radii of Neutron-Deficient Lead Isotopes Beyond N=104 Midshell Investigated by In-Source Laser Spectroscopy

HAL : in2p3-00142862, version 1

DOI : 10.1103/PhysRevLett.98.112502

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Physical Review Letters 98 (2007) 112502

Nuclear Charge Radii of Neutron-Deficient Lead Isotopes Beyond N=104 Midshell Investigated by In-Source Laser Spectroscopy

H. De Witte, A.N. Andreyev, N. Barré¹, M. Bender², T.E. Cocolios, S. Dean, D. Fedorov, V.N. Fedoseyev, L.M. Fraile, S. Franchoo¹, V. Hellemans, P.H. Heenen, K. Heyde, G. Huber, M. Huyse, H. Jeppessen, U. Köster, S.R. Lesher, B.A. Marsh, I. Mukha, B. Roussière¹, J. Sauvage¹, M. Seliverstov, I. Stefanescu, E. Tengborn, K. Van de Vel, J. Van De Walle, P. Van Duppen, Yu. Volkov

(2007)

The shape of exotic even-mass $^{182–190}$Pb isotopes was probed by measurement of optical isotope shifts providing mean square charge radii ($\delta$). 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 $\delta$ 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).

1 :	IPNO - Institut de Physique Nucléaire d'Orsay

2 :	DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

Thème(s)

Physique/Physique Nucléaire Expérimentale


in2p3-00142862, version 1
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Contributeur : Dominique Girod <>
Soumis le : Lundi 23 Avril 2007, 13:27:39
Dernière modification le : Lundi 23 Avril 2007, 13:33:03