A1 Journal article (refereed)
Delayed or absent π(h11/2)2 alignment in 111Xe (2020)
Capponi, L., Smith, J. F., Ruotsalainen, P., Scholey, C., Rahkila, P., Bianco, L., Boston, A. J., Boston, H., Cullen, D. M., Derkx, X., Drummond, M. C., Grahn, T., Greenlees, P. T., Grocutt, L., Hadinia, B., Jakobsson, U., Joss, D. T., Julin, R., Juutinen, S., . . . Uusitalo, J. (2020). Delayed or absent π(h11/2)2 alignment in 111Xe. Physical Review C, 101(1), Article 014313. https://doi.org/10.1103/PhysRevC.101.014313
JYU authors or editors
Publication details
All authors or editors: Capponi, L.; Smith, J. F.; Ruotsalainen, P.; Scholey, C.; Rahkila, P.; Bianco, L.; Boston, A. J.; Boston, H.; Cullen, D. M.; Derkx, X.; et al.
Journal or series: Physical Review C
ISSN: 2469-9985
eISSN: 2469-9993
Publication year: 2020
Volume: 101
Issue number: 1
Article number: 014313
Publisher: American Physical Society
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/PhysRevC.101.014313
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67567
Abstract
Excited states have been identified in the very neutron-deficient N = Z + 3 nucleus 111Xe for the first time, using the 58Ni(58Ni, αn) heavy-ion fusion-evaporation reaction. γ -ray transitions have been unambiguously assigned to 111Xe by correlation with the characteristic 111Xe → 107Te → 103Sn α-decay chain using the method of recoil-decay tagging. Inspection of γ γ -coincidence data has shown that five of the transitions form a rotational-like sequence. Excitation-energy systematics suggest that the sequence could be the favored signature partner of a band built on an h11/2 neutron. Aligned angular momenta of states in the band have been compared to analogous bands in neighboring xenon isotopes. The aligned angular momenta for the 111Xe band are constant over the range of observed rotational frequencies, suggesting that the first π(h11/2 ) 2 alignment is either delayed or absent. It is speculated that the alignment of h11/2 protons in the presence of neutrons in near-identical h11/2 orbitals may be affected by neutron-proton interactions or by the onset of octupole correlations.
Keywords: nuclear physics
Free keywords: collective levels; nuclear structure and decays
Contributing organizations
Ministry reporting: Yes
VIRTA submission year: 2020
JUFO rating: 2