β and γ bands in N = 88 , 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory : vibrations, shape coexistence, and superdeformation

Simple item page
dc.contributor.authorMajola, S. N. T.en_ZA
dc.contributor.authorShi, Z.en_ZA
dc.contributor.authorSong, B. Y.en_ZA
dc.contributor.authorLi, Z. P.en_ZA
dc.contributor.authorZhang, S. Q.en_ZA
dc.contributor.authorBark, R. A.en_ZA
dc.contributor.authorSharpey-Schafer, J. F.en_ZA
dc.contributor.authorAschman, D. G.en_ZA
dc.contributor.authorBvumbi, S. P.en_ZA
dc.contributor.authorBucher, T. D.en_ZA
dc.contributor.authorCullen, D. M.en_ZA
dc.contributor.authorDinoko, T. S.en_ZA
dc.contributor.authorEaston, J. E.en_ZA
dc.contributor.authorErasmus, N.en_ZA
dc.contributor.authorGreenlees, P. T.en_ZA
dc.contributor.authorHartley, D. J.en_ZA
dc.contributor.authorHirvonen, J.en_ZA
dc.contributor.authorKorichi, A.en_ZA
dc.contributor.authorJakobsson, U.en_ZA
dc.contributor.authorJones, P.en_ZA
dc.contributor.authorJongile, S.en_ZA
dc.contributor.authorJulin, R.en_ZA
dc.contributor.authorJuutinen, S.en_ZA
dc.contributor.authorKetelhut, S.en_ZA
dc.contributor.authorKheswa, B. V.en_ZA
dc.contributor.authorKhumalo, N. A.en_ZA
dc.contributor.authorLawrie, E. A.en_ZA
dc.contributor.authorLawrie, J. J.en_ZA
dc.contributor.authorLindsay, R.en_ZA
dc.contributor.authorMadiba, T. E.en_ZA
dc.contributor.authorMakhathini, L.en_ZA
dc.contributor.authorMaliage, S. M.en_ZA
dc.contributor.authorMaqabuka, B.en_ZA
dc.contributor.authorMalatji, K. L.en_ZA
dc.contributor.authorMasiteng, P. L.en_ZA
dc.contributor.authorMashita, P. I.en_ZA
dc.contributor.authorMdletshe, L.en_ZA
dc.contributor.authorMinkova, A.en_ZA
dc.contributor.authorMsebi, L.en_ZA
dc.contributor.authorMullins, S. M.en_ZA
dc.contributor.authorNdayishimye, J.en_ZA
dc.contributor.authorNegi, D.en_ZA
dc.contributor.authorNetshiya, A.en_ZA
dc.contributor.authorNewman, R.en_ZA
dc.contributor.authorNtshangase, S. S.en_ZA
dc.contributor.authorNtshodu, R.en_ZA
dc.contributor.authorMsebi, L.en_ZA
dc.contributor.authorMullins, S. M.en_ZA
dc.contributor.authorNdayishimye, J.en_ZA
dc.contributor.authorNegi, D.en_ZA
dc.contributor.authorNetshiya, A.en_ZA
dc.contributor.authorNewman, R.en_ZA
dc.contributor.authorNtshangase, S. S.en_ZA
dc.contributor.authorNtshodu, R.en_ZA
dc.contributor.authorNyako, B. M.en_ZA
dc.contributor.authorPapka, P.en_ZA
dc.contributor.authorPeura, P.en_ZA
dc.contributor.authorRahkila, P.en_ZA
dc.contributor.authorRiedinger, L. L.en_ZA
dc.contributor.authorRiley, M. A.en_ZA
dc.contributor.authorRoux, D. G.en_ZA
dc.contributor.authorRuotsalainen, P.en_ZA
dc.contributor.authorSaren, J. J.en_ZA
dc.contributor.authorScholey, C.en_ZA
dc.contributor.authorShirinda, O.en_ZA
dc.contributor.authorSithole, M. A.en_ZA
dc.contributor.authorSorri, J.en_ZA
dc.contributor.authorStankiewicz, M.en_ZA
dc.contributor.authorStolze, S.en_ZA
dc.contributor.authorTimar, J.en_ZA
dc.contributor.authorUusitalo, J.en_ZA
dc.contributor.authorVymers, P. A.en_ZA
dc.contributor.authorWiedeking, M.en_ZA
dc.contributor.authorZimba, G. L.en_ZA
dc.date.accessioned2021-10-20T10:21:34Z
dc.date.available2021-10-20T10:21:34Z
dc.date.issued2019-06-05
dc.descriptionCITATION: Majola, S. N. T. et al. 2019. β and γ bands in N=88, 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory: Vibrations, shape coexistence, and superdeformation. Physical Review C, 100(4). doi:10.1103/PhysRevC.100.044324.
dc.descriptionThe original publication is available at https://journals.aps.org/prc/
dc.description.abstractA comprehensive systematic study is made for the collective β and γ bands in even-even isotopes with neutron numbers N = 88 to 92 and proton numbers Z = 62 (Sm) to 70 (Yb). Data, including excitation energies, B(E0) and B(E2) values, and branching ratios from previously published experiments are collated with new data presented for the first time in this study. The experimental data are compared to calculations using a five-dimensional collective Hamiltonian (5DCH) based on the covariant density functional theory (CDFT). A realistic potential in the quadrupole shape parameters V (β,γ ) is determined from potential energy surfaces (PES) calculated using the CDFT. The parameters of the 5DCH are fixed and contained within the CDFT. Overall, a satisfactory agreement is found between the data and the calculations. In line with the energy staggering S(I) of the levels in the 2γ + bands, the potential energy surfaces of the CDFT calculations indicate γ -soft shapes in the N = 88 nuclides, which become γ rigid for N = 90 and N = 92. The nature of the 02 + bands changes with atomic number. In the isotopes of Sm to Dy, they can be understood as β vibrations, but in the Er and Yb isotopes the 02 + bands have wave functions with large components in a triaxial superdeformed minimum. In the vicinity of 152Sm, the present calculations predict a soft potential in the β direction but do not find two coexisting minima. This is reminiscent of 152Sm exhibiting an X(5) behavior. The model also predicts that the 03 + bands are of two-phonon nature, having an energy twice that of the 02 + band. This is in contradiction with the data and implies that other excitation modes must be invoked to explain their origin.en_ZA
dc.description.urihttps://journals.aps.org/prc/abstract/10.1103/PhysRevC.100.044324
dc.description.versionPublisher’s version
dc.format.extent44 pages
dc.identifier.citationMajola, S. N. T. et al. 2019. β and γ bands in N=88, 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory: Vibrations, shape coexistence, and superdeformation. Physical Review C, 100(4). doi:10.1103/PhysRevC.100.044324.
dc.identifier.issn2469-9993 (online)
dc.identifier.issn2469-9985 (print)
dc.identifier.otherdoi:10.1103/PhysRevC.100.044324
dc.identifier.urihttp://hdl.handle.net/10019.1/123270
dc.language.isoen_ZAen_ZA
dc.publisherAmerican Physical Society
dc.rights.holderAmerican Physical Society
dc.subjectCovariant density functional theoryen_ZA
dc.subjectDensity functionalsen_ZA
dc.subjectNuclear shapesen_ZA
dc.subjectPotential energy surfacesen_ZA
dc.subjectHamiltonian systemsen_ZA
dc.titleβ and γ bands in N = 88 , 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory : vibrations, shape coexistence, and superdeformationen_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
majola_bands_2019.pdf
Size:
6.39 MB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Physics)