Neutron-proton multiplets in the odd-odd nucleus Rb53 3790

M. Czerwiński, T. Rzaoca-Urban, W. Urban, P. Baoczyk, K. Sieja, J. Tímár, B. Nyakó, I. Kuti, T. G. Tornyi, L. Atanasova, A. Blanc, M. Jentschel, P. Mutti, U. Köster, T. Soldner, G. De France, G. S. Simpson, C. A. Ur

Research output: Contribution to journalArticle

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Abstract

Medium-spin excited levels in Rb90, populated in the fission of U235 induced by neutrons, have been observed for the first time. γ radiation from fission has been measured by using the EXILL array of Ge detectors at the cold-neutron-beam facility PF1B of the Institut Laue-Langevin, Grenoble. Low-energy levels are interpreted as members of the πp3/2-1ν(d5/2)3, πf5/2-1ν(d5/2)3, and πg9/2ν(d5/2)3 multiplets with the 0- ground state due to the seniority-3 coupling in the νd5/2 shell. Analogous anomalous coupling within the πg9/2ν(d5/2)3 configuration explains the 5+, 6+, and 7+ triplet of states, observed at medium spins, similar to the triplet seen in the N=53 isotone, Br88. Shell-model calculations reproduce well the proposed structures in Rb88,90 and support the seniority-3 coupling in N=53 isotones and its absence in N=51 isotones. The structure of the odd-odd Rb88 and Rb90 nuclei provides an argument in favor of the collectivity building up at the neutron number N=53.

Original languageEnglish
Article number034318
JournalPhysical Review C - Nuclear Physics
Volume93
Issue number3
DOIs
Publication statusPublished - Mar 16 2016

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odd-odd nuclei
fine structure
neutrons
fission
protons
cold neutrons
neutron beams
energy levels
nuclei
ground state
detectors
radiation
configurations

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Czerwiński, M., Rzaoca-Urban, T., Urban, W., Baoczyk, P., Sieja, K., Tímár, J., ... Ur, C. A. (2016). Neutron-proton multiplets in the odd-odd nucleus Rb53 3790. Physical Review C - Nuclear Physics, 93(3), [034318]. https://doi.org/10.1103/PhysRevC.93.034318

Neutron-proton multiplets in the odd-odd nucleus Rb53 3790. / Czerwiński, M.; Rzaoca-Urban, T.; Urban, W.; Baoczyk, P.; Sieja, K.; Tímár, J.; Nyakó, B.; Kuti, I.; Tornyi, T. G.; Atanasova, L.; Blanc, A.; Jentschel, M.; Mutti, P.; Köster, U.; Soldner, T.; De France, G.; Simpson, G. S.; Ur, C. A.

In: Physical Review C - Nuclear Physics, Vol. 93, No. 3, 034318, 16.03.2016.

Research output: Contribution to journalArticle

Czerwiński, M, Rzaoca-Urban, T, Urban, W, Baoczyk, P, Sieja, K, Tímár, J, Nyakó, B, Kuti, I, Tornyi, TG, Atanasova, L, Blanc, A, Jentschel, M, Mutti, P, Köster, U, Soldner, T, De France, G, Simpson, GS & Ur, CA 2016, 'Neutron-proton multiplets in the odd-odd nucleus Rb53 3790', Physical Review C - Nuclear Physics, vol. 93, no. 3, 034318. https://doi.org/10.1103/PhysRevC.93.034318
Czerwiński, M. ; Rzaoca-Urban, T. ; Urban, W. ; Baoczyk, P. ; Sieja, K. ; Tímár, J. ; Nyakó, B. ; Kuti, I. ; Tornyi, T. G. ; Atanasova, L. ; Blanc, A. ; Jentschel, M. ; Mutti, P. ; Köster, U. ; Soldner, T. ; De France, G. ; Simpson, G. S. ; Ur, C. A. / Neutron-proton multiplets in the odd-odd nucleus Rb53 3790. In: Physical Review C - Nuclear Physics. 2016 ; Vol. 93, No. 3.
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