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

Abstract : 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).
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http://hal.in2p3.fr/in2p3-00142862
Contributor : Dominique Girod <>
Submitted on : Monday, April 23, 2007 - 1:27:39 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:13 PM

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H. de Witte, A.N. Andreyev, N. Barré, M. Bender, T.E. Cocolios, et al.. Nuclear Charge Radii of Neutron-Deficient Lead Isotopes Beyond N=104 Midshell Investigated by In-Source Laser Spectroscopy. Physical Review Letters, American Physical Society, 2007, 98, pp.112502. ⟨10.1103/PhysRevLett.98.112502⟩. ⟨in2p3-00142862⟩

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