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Title: beta decay of Mg-31: Extending the "island of inversion"
Authors: Maréchal, F ×
Balabanski, DL
Borremans, D
Daugas, JM
de Oliveira Santos, F
Dessagne, P
Georgiev, G
Giovinazzo, J
Grévy, S
Himpe, Pieter
Jollet, C
Matea, I
Neyens, Gerda
Perrot, F
Poirier, E
Roig, O
Stanoiu, M
Stodel, C
Thomas, JC
Turzó, K
Yordanov, Deyan
Caurier, E
Nowacki, F
Poves, A #
Issue Date: Oct-2005
Publisher: American physical soc
Series Title: Physical Review C vol:72
Article number: 044314
Abstract: The beta decay of Mg-31 has been investigated at GANIL. The ions were implanted in a silicon detector array surrounded by germanium gamma detectors. beta particles and subsequent gamma rays have been observed. The Mg-31 half-life has been measured (T-1/2 = 237 +/- 25 ms) in good agreement with previously reported values. The decay scheme of Mg-31 has been enriched with two new low-spin levels and seven new gamma transitions in Al-31. Most importantly, very weak feeding to the Al-31 ground and lowest excited states has been established. These results are compared to new shell-model calculations in the sd-fp valence space, using an interaction that was modified in order to reproduce the recently established low-energy level scheme of Mg-31. A good agreement for all observables is found, supporting the idea that Al-31 is outside and Mg-31 is inside the so-called "island of inversion."
URI: 
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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