Universität zu Köln

Delafosse, C., Verney, D., Marevic, P., Gottardo, A., Michelagnoli, C., Lemasson, A., Goasduff, A., Ljungvall, J., Clement, E., Korichi, A., De Angelis, G., Andreoiu, C., Babo, M., Boso, A., Didierjean, F., Dudouet, J., Franchoo, S., Gadea, A., Georgiev, G., Ibrahim, F., Jacquot, B., Konstantinopoulos, T., Lenzi, S. M., Maquart, G., Matea, I, Mengoni, D., Napoli, D. R., Niksic, T., Olivier, L., Perez-Vidal, R. M., Portail, C., Recchia, F., Redon, N., Siciliano, M., Stefan, I, Stezowski, O., Vretenar, D., Zielinska, M., Barrientos, D., Benzoni, G., Birkenbach, B., Boston, A. J., Boston, H. C., Cederwall, B., Charles, L., Ciemala, M., Collado, J., Cullen, D. M., Desesquelles, P., de France, G., Domingo-Pardo, C., Eberth, J., Gonzalez, V, Harkness-Brennan, L. J., Hess, H., Judson, D. S., Jungclaus, A., Korten, W., Lefevre, A., Legruel, F., Menegazzo, R., Million, B., Nyberg, J., Quintana, B., Ralet, D., Reiter, P., Saillant, F., Sanchis, E., Theisen, Ch and Dobon, J. J. Valiente (2018). Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the Ni-78 Region: A Hint from Lifetime Measurements. Phys. Rev. Lett., 121 (19). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

Lifetime measurements of excited states of the light N = 52 isotones Kr-88, Se-86, and Ge-84 have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities B(E2; 2(+)-> 0(+)) and B(E2; 4(+)-> 2(+)) were obtained for the first time for the hard-to-reach 84Ge. While the B(E2; 2(+)-> 0(+) ) values of Kr-88, Se-86 saturate the maximum quadrupole collectivity offered by the natural valence (3s, 2d, 1g(7/2), 1h(11/2)) space of an inert Ni-78 core, the value obtained for Ge-84 largely exceeds it, suggesting that shape coexistence phenomena, previously reported at N less than or similar to 49, extend beyond N = 50. The onset of collectivity at Z = 32 is understood as due to a pseudo-SU(3) organization of the proton single-particle sequence reflecting a clear manifestation of pseudospin symmetry. It is realized that the latter provides actually reliable guidance for understanding the observed proton and neutron single particle structure in the whole medium-mass region, from Ni to Sn, pointing towards the important role of the isovector-vector rho field in shell-structure evolution.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Delafosse, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Verney, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marevic, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gottardo, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Michelagnoli, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lemasson, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Goasduff, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ljungvall, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Clement, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Korichi, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED De Angelis, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Andreoiu, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Babo, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boso, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Didierjean, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dudouet, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Franchoo, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gadea, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Georgiev, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ibrahim, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jacquot, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Konstantinopoulos, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lenzi, S. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maquart, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Matea, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Mengoni, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Napoli, D. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Niksic, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Olivier, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Perez-Vidal, R. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Portail, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Recchia, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Redon, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Siciliano, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stefan, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Stezowski, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vretenar, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zielinska, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Barrientos, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Benzoni, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Birkenbach, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boston, A. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boston, H. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cederwall, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Charles, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ciemala, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Collado, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cullen, D. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Desesquelles, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED de France, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Domingo-Pardo, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eberth, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gonzalez, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Harkness-Brennan, L. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hess, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Judson, D. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jungclaus, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Korten, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lefevre, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Legruel, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menegazzo, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Million, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nyberg, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Quintana, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ralet, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Reiter, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Saillant, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchis, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Theisen, Ch UNSPECIFIED UNSPECIFIED UNSPECIFIED Dobon, J. J. Valiente UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-165869
DOI:	10.1103/PhysRevLett.121.192502
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	121
Number:	19
Date:	2018
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/16586