The “island of inversion" from a nuclear moments
perspective and the g factor of 35Si |
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| Authors: | G Neyens P Himpe D L Balabanski P Morel L Perrot M De Rydt I Stefan C Stodel J C Thomas N Vermeulen D T Yordanov |
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| Institution: | (1) Katholieke Universiteit Leuven, I.K.S., Celestijnenlaan 200 D, 3001 Leuven, Belgium;(2) Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria;(3) CEA/DIF/DPTA/PN, BP. 12, 91680 Bruyères-le-Chatel, France;(4) GANIL, BP. 55027, 14076 Caen Cedex 5, France |
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| Abstract: | This paper reviews recent results from electromagnetic
moment measurements on isotopes in the island of inversion around
N=20. The obtained moments on neutron rich Na, Mg, Al and Si
isotopes allow to draw conclusions on the amount of intruder
components in their ground state wave function, demonstrating a
gradual transition from the normal sd-shell region into the
island of inversion, starting at N=18 for Na, N=19 for Mg and N=20
for Al isotopes. A measurement of the ground state g factor of
35Si (N=21), using a polarized fragment beam at GANIL, is
discussed in more detail. The magnetic moment μ(35Si, Iπ= 7/2-) = (-)1.638(4) μN is consistent with a normal ground
state structure, dominated by a νf7/2 neutron. |
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| Keywords: | 21 10 Ky – 23 20 En – 27 30 +t – |
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