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Simple Nuclear Structure in Cd111-129 from Atomic Isomer Shifts

Abstract : Isomer shifts have been determined in Cd111-129 by high-resolution laser spectroscopy at CERN-ISOLDE. The corresponding mean square charge-radii changes, from the 1/2(+) and the 3/2(+) ground states to the 11/2(-) isomers, have been found to follow a distinct parabolic dependence as a function of the atomic mass number. Since the isomers have been previously associated with simplicity due to the linear mass dependence of their quadrupole moments, the regularity of the isomer shifts suggests a higher order of symmetry affecting the ground states in addition. A comprehensive description assuming nuclear deformation is found to accurately reproduce the radii differences in conjunction with the known quadrupole moments. This intuitive interpretation is supported by covariant density functional theory.
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Contributor : Emilie Bonnardel Connect in order to contact the contributor
Submitted on : Friday, February 19, 2016 - 10:35:18 AM
Last modification on : Monday, December 13, 2021 - 9:16:43 AM

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D.T. Yordanov, L. Balabanski D., L. Bissell M., K. Blaum, I. Budincevic, et al.. Simple Nuclear Structure in Cd111-129 from Atomic Isomer Shifts . Physical Review Letters, American Physical Society, 2016, 116 (3), pp.032501. ⟨10.1103/PhysRevLett.116.032501⟩. ⟨in2p3-01276280⟩



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