Structure of the N = 50 As, Ge, Ga nuclei
E. Sahin A
,
G. de Angelis
,
G. Duchene
(1)
,
T. Faul
(1)
,
A. Gadea
,
A.F. Lisetskiy
,
D. Ackermann
,
A. Algora
,
S. Aydin
,
F. Azaiez
(2)
,
D. Bazzacco
,
G. Benzoni
,
M. Bostan
,
T. Byrski
,
I. Celikovic
,
R. Chapman
,
L. Corradi
,
S. Courtin
(1)
,
D. Curien
(1)
,
U. Datta Pramanik
,
F. Didierjean
(1)
,
O. Dorvaux
(1)
,
M.N. Erduran
,
S. Erturk
,
E. Farnea
,
E. Fioretto
,
G. de France
(3)
,
S. Franchoo
(2)
,
B. Gall
(1)
,
A. Gottardo
,
B. Guiot
,
F. Haas
(1)
,
F. Ibrahim
(2)
,
E. Ince
,
A. Khouaja
(1)
,
A. Kusoglu
,
G. La Rana U
,
M. Labichev
,
D. Lebhertz
(1)
,
S. Lenzi
,
S. Leoni
,
S. Lunardi
,
P. Masoni
,
D. Mengoni
,
C. Michelagnoli
,
V. Modamio
,
G. Montagnoli
,
D. Montanari
,
R. Morou
,
B. Mouginot
,
D.R. Napoli
,
D. O'Donnell
,
J.R.B. Oliveira
,
J. Ollier
,
R. Orlandi
,
G. Pollarolo
,
F. Recchia
,
J. Robin
,
M.-D. Salsac
(4)
,
F. Scarlassara
,
R.P. Singh
,
R. Silvestri
,
J.F. Smith
,
I. Stefan
(2)
,
A.M. Stefanini
,
K. Subotic
,
S. Szilner
,
D. Tonev
,
D.A. Torres
,
M. Trotta
,
P. Ujic
,
C. Ur
,
J.J. Valiente-Dobón
,
D. Verney
(2)
,
M. Yalcinkaya
,
P.T. Wady
,
K.T. Wiedemann
,
K. Zuber
E. Sahin A
- Function : Author
G. de Angelis
- Function : Author
G. Duchene
- Function : Author
- PersonId : 742772
- IdHAL : gilbert-duchene
- ORCID : 0000-0002-2396-940X
- IdRef : 084132604
A. Gadea
- Function : Author
A.F. Lisetskiy
- Function : Author
D. Ackermann
- Function : Author
- PersonId : 747422
- IdHAL : dieter-ackermann
A. Algora
- Function : Author
S. Aydin
- Function : Author
D. Bazzacco
- Function : Author
G. Benzoni
- Function : Author
- PersonId : 755374
- ORCID : 0000-0002-7938-0338
M. Bostan
- Function : Author
T. Byrski
- Function : Author
I. Celikovic
- Function : Author
R. Chapman
- Function : Author
L. Corradi
- Function : Author
D. Curien
- Function : Author
- PersonId : 177076
- IdHAL : dominique-curien
- ORCID : 0000-0003-1314-898X
- IdRef : 03364019X
U. Datta Pramanik
- Function : Author
M.N. Erduran
- Function : Author
S. Erturk
- Function : Author
E. Farnea
- Function : Author
E. Fioretto
- Function : Author
B. Gall
- Function : Author
- PersonId : 753581
- IdHAL : gall-benoit-unistra
- ORCID : 0000-0002-9858-1397
A. Gottardo
- Function : Author
B. Guiot
- Function : Author
E. Ince
- Function : Author
A. Kusoglu
- Function : Author
G. La Rana U
- Function : Author
M. Labichev
- Function : Author
S. Lenzi
- Function : Author
S. Leoni
- Function : Author
- PersonId : 755161
- ORCID : 0000-0002-3691-0749
S. Lunardi
- Function : Author
P. Masoni
- Function : Author
D. Mengoni
- Function : Author
C. Michelagnoli
- Function : Author
V. Modamio
- Function : Author
G. Montagnoli
- Function : Author
D. Montanari
- Function : Author
R. Morou
- Function : Author
B. Mouginot
- Function : Author
D.R. Napoli
- Function : Author
D. O'Donnell
- Function : Author
J.R.B. Oliveira
- Function : Author
J. Ollier
- Function : Author
R. Orlandi
- Function : Author
G. Pollarolo
- Function : Author
F. Recchia
- Function : Author
J. Robin
- Function : Author
F. Scarlassara
- Function : Author
R.P. Singh
- Function : Author
R. Silvestri
- Function : Author
J.F. Smith
- Function : Author
I. Stefan
- Function : Author
- PersonId : 179537
- IdHAL : iulian-stefan
- ORCID : 0000-0001-7923-8908
- IdRef : 114633401
A.M. Stefanini
- Function : Author
K. Subotic
- Function : Author
S. Szilner
- Function : Author
D. Tonev
- Function : Author
D.A. Torres
- Function : Author
M. Trotta
- Function : Author
P. Ujic
- Function : Author
C. Ur
- Function : Author
J.J. Valiente-Dobón
- Function : Author
M. Yalcinkaya
- Function : Author
P.T. Wady
- Function : Author
K.T. Wiedemann
- Function : Author
K. Zuber
- Function : Author
Abstract
The level structures of the N = 50 83As, 82Ge, and 81Ga isotones have been investigated by means of multi-nucleon transfer reactions. A first experiment was performed with the CLARA-PRISMA setup to identify these nuclei. A second experiment was carried out with the GASP array in order to deduce the γ -ray coincidence information. The results obtained on the high-spin states of such nuclei are used to test the stability of the N = 50 shell closure in the region of 78Ni (Z = 28). The comparison of the experimental level schemes with the shell-model calculations yields an N = 50 energy gap value of 4.7(3) MeV at Z = 28. This value, in a good agreement with the prediction of the finite-range liquid-drop model as well as with the recent large-scale shell model calculations, does not support a weakening of the N = 50 shell gap down to Z = 28.