Spins and magnetic moments of 58;60;62;64Mn ground states and isomers
arXiv:1508.06207 · doi:10.1103/PhysRevC.92.044311
Abstract
The odd-odd 54;56;58;60;62;64Mn isotopes (Z = 25) were studied using bunched-beam collinear laser spectroscopy at ISOLDE, CERN. From the measured hyperfine spectra the spins and magnetic moments of Mn isotopes up to N = 39 were extracted. The previous tentative ground state spin assignments of 58;60;62;64Mn are now firmly determined to be I = 1 along with an I = 4 assignment for the isomeric states in 58;60;62Mn. The I = 1 magnetic moments show a decreasing trend with increasing neutron number while the I = 4 moments remain quite constant between N = 33 and N = 37. The results are compared to large-scale shell-model calculations using the GXPF1A and LNPS effective interactions. The excellent agreement of the ground state moments with the predictions from the LNPS calculations illustrates the need for an increasing amount of proton excitations across Z = 28 and neutron excitations across N = 40 in the ground state wave functions from N = 37 onwards.
References in corpus (7)
- New effective interaction for -shell nuclei and its implications for the stability of the ==28 closed core
- Precision Atomic Physics Techniques for Nuclear Physics with Radioactive Beams
- Decay of neutron-rich Mn nuclides and deformation of heavy Fe isotopes
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Cited by in corpus (5)
- Laser Spectroscopy for the Study of Exotic Nuclei
- Precision Mass Measurement of Cr: Nuclear Collectivity towards the \emph{N}=40 Island of Inversion
- Changes in nuclear structure along the Mn isotopic chain studied via charge radii
- Low-energy Coulomb excitation of Fe and Mn following in-beam decay of Mn
- Isomeric states in neutron-rich nuclei around