Search for 2d5/2 Neutron States in $^{69}$Ni
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G. Duchêne
- Function : Author
- PersonId : 742772
- IdHAL : gilbert-duchene
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D. Curien
- Function : Author
- PersonId : 177076
- IdHAL : dominique-curien
- ORCID : 0000-0003-1314-898X
- IdRef : 03364019X
Ch. Finck
- Function : Author
F. Flavigny
- Function : Author
- PersonId : 748908
- IdHAL : freddy-flavigny
- ORCID : 0000-0003-0050-5677
J. Gibelin
- Function : Author
- PersonId : 11987
- IdHAL : julien-gibelin
- ORCID : 0000-0001-6751-3714
- IdRef : 105736708
A. Goasduff
- Function : Author
- PersonId : 763161
- ORCID : 0000-0003-3453-3297
- IdRef : 16791264X
K. Kemper
- Function : Author
V. Lapoux
- Function : Author
- PersonId : 12217
- IdHAL : valerie-lapoux
- ORCID : 0000-0002-2014-199X
- IdRef : 130573876
A. Matta
- Function : Author
- PersonId : 740837
- IdHAL : adrien-matta
- ORCID : 0000-0002-0331-1563
- IdRef : 158499972
F. Nowacki
- Function : Author
- PersonId : 748924
- IdHAL : frederic-nowacki
- ORCID : 0000-0002-7854-8717
J. Piot
- Function : Author
- PersonId : 739645
- IdHAL : julien-piot
- ORCID : 0000-0002-6593-6964
- IdRef : 152102205
J.A. Scarpaci
- Function : Author
- PersonId : 742300
- IdHAL : jean-antoine-scarpaci
- IdRef : 087196514
K. Sieja
- Function : Author
- PersonId : 738608
- IdHAL : kamila-sieja
- ORCID : 0000-0001-7736-656X
I. Stefan
- Function : Author
- PersonId : 179537
- IdHAL : iulian-stefan
- ORCID : 0000-0001-7923-8908
- IdRef : 114633401
C. Stodel
- Function : Author
- PersonId : 177922
- IdHAL : christelle-stodel
- ORCID : 0000-0003-4658-2213
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J.C. Thomas
- Function : Author
- PersonId : 738662
- IdHAL : jean-charles-thomas
- ORCID : 0000-0001-6618-9772
Abstract
It has been shown that the neutron 2d5=2 orbital has to be included in shell-model calculations to explain the large quadrupole collectivity observed in the Fe and Cr of N = 40 region, probably a new island of inversion similar to the one known for light nuclei around N = 20. Indeed, in these calculations using a large valence neutron space, the position, i.e. the singleparticle energy, of the 2d5=2 orbital is a crucial ingredient. The experiment discussed in this paper aims to determine the $\nu$1g9=2–$\nu$2d5=2 gap using the neutron stripping reaction d(68Ni; p)68Ni which has been performed at GANIL in inverse kinematics. Preliminary results are presented.