Dudouet, J., Lemasson, A., Duchene, G., Rejmund, M., Clement, E., Michelagnoli, C., Didierjean, F., Korichi, A., Maquart, G., Stezowski, O., Lizarazo, C., Perez-Vidal, R. M., Andreoiu, C., de Angelis, G., Astier, A., Delafosse, C., Deloncle, I., Dombradi, Z., de France, G., Gadea, A., Gottardo, A., Jacquot, B., Jones, P., Konstantinopoulos, T., Kuti, I., Le Blanc, F., Lenzi, S. M., Li, G., Lozeva, R., Million, B., Napoli, D. R., Navin, A., Petrache, C. M., Pietralla, N., Ralet, D., Ramdhane, M., Redon, N., Schmitt, C., Sohler, D., Verney, D., Barrientos, D., Birkenbach, B., Burrows, I., Charles, L., CoIlado, J., Cullen, D. M., Desesquelles, P., Domingo Pardo, C., Gonzalez, V., Harkness-Brennan, L., Hess, H., Judson, D. S., Karolak, M., Korten, W., Labiche, M., Ljungval, J., Menegazzo, R., Mengoni, D., Pullia, A., Recchia, F., Reiter, P., Salsac, M. D., Sanchis, E., Theisen, Ch., Valiente-Dobon, J. J. and Zielinska, M. (2017). Kr-96(36)60-Low-Z Boundary of the Island of Deformation at N=60. Phys. Rev. Lett., 118 (16). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

Prompt.-ray spectroscopy of the neutron-rich Kr-96, produced in transfer-and fusion-induced fission reactions, has been performed using the combination of the Advanced Gamma Tracking Array and the VAMOS + +spectrometer. A second excited state, assigned to J pi = 4(+), is observed for the first time, and a previously reported level energy of the first 2+ excited state is confirmed. The measured energy ratio R-4/2 = E(4(+))/E(2(+)) = 2.12(1) indicates that this nucleus does not show a well-developed collectivity contrary to that seen in heavier N = 60 isotones. This new measurement highlights an abrupt transition of the degree of collectivity as a function of the proton number at Z = 36, of similar amplitude to that observed at N = 60 at higher Z values. A possible reason for this abrupt transition could be related to the insufficient proton excitations in the g(9/2), d(5/2), and s(1/2) orbitals to generate strong quadrupole correlations or to the coexistence of competing different shapes. An unexpected continuous decrease of R-4/2 as a function of the neutron number up to N = 60 is also evidenced. This measurement establishes the Kr isotopic chain as the low-Z boundary of the island of deformation for N = 60 isotones. A comparison with available theoretical predictions using different beyond mean-field approaches shows that these models fail to reproduce the abrupt transitions at N = 60 and Z = 36.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Dudouet, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lemasson, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Duchene, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rejmund, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clement, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michelagnoli, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Didierjean, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korichi, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maquart, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stezowski, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lizarazo, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perez-Vidal, R. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Andreoiu, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Angelis, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Astier, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delafosse, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deloncle, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dombradi, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de France, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gadea, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gottardo, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jacquot, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jones, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Konstantinopoulos, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kuti, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Le Blanc, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lenzi, S. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lozeva, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Million, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Napoli, D. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Navin, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrache, C. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pietralla, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ralet, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ramdhane, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Redon, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmitt, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sohler, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Verney, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barrientos, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Birkenbach, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burrows, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Charles, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
CoIlado, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cullen, D. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Desesquelles, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Domingo Pardo, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gonzalez, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Harkness-Brennan, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hess, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Judson, D. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Karolak, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Korten, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Labiche, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ljungval, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Menegazzo, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mengoni, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pullia, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Recchia, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reiter, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Salsac, M. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchis, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Theisen, Ch.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Valiente-Dobon, J. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zielinska, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-233868
DOI: 10.1103/PhysRevLett.118.162501
Journal or Publication Title: Phys. Rev. Lett.
Volume: 118
Number: 16
Date: 2017
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NUCLEAR-STRUCTURE; LASER-SPECTROSCOPY; ATOMIC-NUCLEI; CHARGE RADII; SHELL-MODEL; 100 REGIONMultiple languages
Physics, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/23386

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