Shell Gap Reduction In Exotic N = 17 Nuclei
- Obertelli, A.
- Alamanos, N.
- Alvarez, M.
- Auger, F.
- Dayras, R.
- Drouart, A.
- de France, G.
- Gillibert, A.
- Jurado, B.
- Keeley, N.
- Lapoux, V.
- Mittig, W.
- Mougeot, X.
- Nalpas, L.
- Pakou, A.
- Patronis, N.
- Pollacco, E.
- Rejmund, F.
- Rejmund, M.
- Roussel-Chomaz, P.
- Savajols, H.
- Skaza, F.
- Theisen, Ch.
DOIAbstract
An experimental spectroscopic investigation of some neutron rich Mg and Al isotopes around the shell closure N=20 has been performed. The delayed neutron and $\gamma$ spectra, following the $\beta$-decay of $^{33}$Mg and $^{35}$Al have been measured using the delayed neutron detector array TONNERRE coupled with high efficiency EXOGAM clover detectors, a LEPS detector and eight low-energy neutron detectors. A detailed analysis of such spectra allows one to construct the level schemes of their daughters, $^{32,33)$Al and $^{34,35}$Si. The resulting spectroscopic information will provide stringent tests of large scale shell model calculations including np - nh excitations aimed at the understanding of the structural effects occurring in this r...
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