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Title: Spin and magnetic moment of Mg-33: Evidence for a negative-parity intruder ground state
Authors: Yordanov, D. T ×
Kowalska, M
Blaum, K
De Rydt, Marieke
Flanagan, K. T
Lievens, Peter
Neugart, R
Neyens, Gerda
Stroke, H. H #
Issue Date: Nov-2007
Publisher: Amer physical soc
Series Title: Physical Review Letters vol:99 issue:21 pages:1-4
Article number: 212501
Abstract: We report on the first determination of the nuclear ground-state spin of Mg-33, I=3/2, and its magnetic moment, mu=-0.7456(5) mu(N), by combining laser spectroscopy with nuclear magnetic resonance techniques. These values are inconsistent with an earlier suggested 1 particle-1 hole configuration and provide evidence for a 2 particle-2 hole intruder ground state with negative parity. The results are in agreement with an odd-neutron occupation of the 3/2[321] Nilsson orbital at a large prolate deformation. The discussion emphasizes the need of further theoretical and experimental investigation of the island of inversion, a region previously thought to be well understood.We report on the first determination of the nuclear ground-state spin of Mg-33, I = 3/2, and its magnetic moment, mu = -0.7456(5) mu(N), by combining laser spectroscopy with nuclear magnetic resonance techniques. These values are inconsistent with an earlier suggested 1 particle-1 hole configuration and provide evidence for a 2 particle-2 hole intruder ground state with negative parity. The results are in agreement with an odd-neutron occupation of the 3/2[321] Nilsson orbital at a large prolate deformation. The discussion emphasizes the need of further theoretical and experimental investigation of the island of inversion, a region previously thought to be well understood.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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