In-beam gamma spectroscopy of very neutron-rich nuclei at GANIL
F. Azaiez
(1)
,
M. Belleguic
(1)
,
O. Sorlin
(1)
,
S. Leenhardt
(1)
,
C. Bourgeois
(1)
,
C. Donzaud
(1)
,
J. Duprat
(1)
,
D. Guillemaud-Mueller
(1)
,
A.C. Mueller
(1)
,
F. Pougheon
(1)
,
M.G. Saint-Laurent
(2)
,
M.J. Lopez
,
N.L. Achouri
(3)
,
J.M. Daugas
(2)
,
M. Lewitowicz
(2)
,
W. Mittig
(2)
,
Francois de Oliveira Santos
(2)
,
P. Roussel-Chomaz
(2)
,
H. Savajols
(2)
,
Yu.E. Penionzhkevich
,
Yu. Sobolev
,
C. Borcea
,
M. Stanoiu
,
J.C. Angélique
(3)
,
S. Grévy
(3)
,
N.A. Orr
(3)
,
I. Deloncle
(4)
,
J. Kiener
(4)
,
M.G. Porquet
(4)
,
F. Marie
(5)
,
A. Gillibert
(5)
,
J.E. Sauvestre
,
Z. Dlouhy
,
W. Shuying
J. Duprat
- Fonction : Auteur
- PersonId : 739924
- IdHAL : jean-duprat
- ORCID : 0000-0001-7408-3089
- IdRef : 116736127
M.J. Lopez
- Fonction : Auteur
N.L. Achouri
- Fonction : Auteur
- PersonId : 940560
- ORCID : 0000-0003-4411-6796
- IdRef : 069739773
Francois de Oliveira Santos
- Fonction : Auteur
- PersonId : 176640
- IdHAL : francois-de-oliveira-santos
- ORCID : 0000-0003-4539-5985
- IdRef : 157826392
H. Savajols
- Fonction : Auteur
- PersonId : 741727
- IdHAL : herve-savajols
- ORCID : 0000-0003-0534-0920
- IdRef : 180822993
Yu.E. Penionzhkevich
- Fonction : Auteur
Yu. Sobolev
- Fonction : Auteur
C. Borcea
- Fonction : Auteur
M. Stanoiu
- Fonction : Auteur
J.C. Angélique
- Fonction : Auteur
- PersonId : 829693
- ORCID : 0000-0003-0032-2870
- IdRef : 123532566
N.A. Orr
- Fonction : Auteur
- PersonId : 940479
- ORCID : 0000-0002-8499-8693
I. Deloncle
- Fonction : Auteur
- PersonId : 742159
- IdHAL : isabelle-deloncle
- IdRef : 19712898X
J.E. Sauvestre
- Fonction : Auteur
Z. Dlouhy
- Fonction : Auteur
W. Shuying
- Fonction : Auteur
Résumé
The structure of nuclei far from stability call be investigated by means of in-beam gamma spectroscopy using both stable and radioactive beams. A gamma -array consisting of BaF2 and Ge detectors have been used at GANIL in order to perform two of such experiments: i) Secondary beams of neutron-rich Ge, Zn and Ni isotopes around N=40 were produced from the fragmentation of a primary /sup 86/Kr beam, and analyzed by means of the LISE3 spectrometer. For the transitions between the 0/sup +/ ground state and the first 2/sup +/ state, B(E2) values have been extracted from Coulomb excitation cross-section measurement. Some of the obtained results related to the effectiveness of the N=40 spherical sub-shell closure as well as future improvements of the quality of the data are discussed. ii) In-beam gamma -spectroscopy of neutron-rich nuclei around /sup 32/Mg produced by fragmentation of /sup 36/S have been recently performed Gamma decay of relatively higher excited states have been measured in a large number of exotic light nuclei. Preliminary results obtained in a number of even-even nuclei around N=20, such as /sup 20,22/O, /sup 26,28/Ne and /sup 30,32/Mg are presented.