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RESEARCH PRODUCT
Laser-spectroscopy measurements of 72–96Kr spins, moments and charge radii
Peter LievensU GeorgA KleinRoger SilveransL. VermeerenW BorchersM KeimRainer NeugartEddy Arnoldsubject
PhysicsNuclear and High Energy PhysicsIsotopeSpinsStable isotope ratioNuclear TheoryKryptonchemistry.chemical_elementchemistryNeutron numberIonizationNuclear Physics - ExperimentPhysics::Atomic PhysicsAtomic physicsNuclear ExperimentSpectroscopyHyperfine structuredescription
Abstract The spins, moments and radii of krypton isotopes have been investigated by collinear fast-beam laser spectroscopy in combination with ultra-sensitive collisional ionization detection. The sequence of isotopes under study ranges from the neutron-deficient N = Z = 36 isotope 72 Kr to the neutron-rich 96 Kr ( N = 60). The mean-square charge radii in the neighbourhood of the N = 50 neutron-shell closure exhibit a pronounced shell effect which has recently been explained in the framework of relativistic mean-field theory. The results for the neutron-deficient nuclei are related to the shape coexistence of strongly prolate and near-spherical states which is known from nuclear spectroscopy. Here, an inversion of the odd-even staggering is observed below the neutron number N = 45. The neutron-rich transitional nuclei are influenced by the N = 56 subshell closure. In contrast to the N = 60 isotones 97 Rb, 98 Sr and 100 Zr, the new isotope 96 Kr is not strongly deformed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-11-11 | Nuclear Physics A |