The[g 9 2/2 ]8+ state in96Zr

Stolzenwald, M. L.; Lhersonneau, G.; Brant, S.; Menzen, G.; Sistemich, K.

doi:10.1007/bf01284461

Cited by 8 publications

(6 citation statements)

References 4 publications

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“…On the other hand, the (~r g9/2, v~7/2) 1 +, 2 + ..... 8 + multiplet is characterized by (9 = 1 (both quasiparticles obviously are particle-like) and Jff = 0. These predictions are in accordance with the experimental energy pattern [1][2][3][4][5][6][7] in 88,9Oy (Fig. 3) which gives confidence in the results of similar considerations on 96y.…”

Section: Qualitative Considerationssupporting

confidence: 90%

“…The parabolic rule predicts [1][2][3][4][5][6][7][8] that in 96y the levels 1 § 2 + .... , 8 § lie on a parabola which opens downwards, with the 1 + and 8 + members being shifted down to the bottom of each branch. Furthermore, because of ~#'=0 it follows that E(1 +)<E(8+).…”

Section: Qualitative Considerationsmentioning

confidence: 99%

“…2. Moreover, it has been shown recently [2] that the /~-decaying 10 s isomer of 96y is most probably the 8 + member of the (re g9/2, v gv/2) multiplet. The excitation energy of the isomer is not known, but the study [3] of the energies of the /3-particles of its decay show that it must lie around 1 MeV.…”

Section: Introductionmentioning

confidence: 98%

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Proton-neutron multiplets in96Y

Brant

Lhersonneau

Stolzenwald

et al. 1988

Z. Physik A - Atomic Nuclei

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The structure of the nucleus 96 39Y57 is discussed in the framework of the parabolic rule for the splitting of members of proton-neutron coupled configurations and of the interacting boson-fermion-fermion model (IBFFM). A good description of the available experimental data including the existence of the /~-decaying 8 + isomer with a half-life of 10 s has been obtained which demonstrates the influence of the subshell closures in the neighbourhood of 96Zr56.

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Section: Qualitative Considerationssupporting

confidence: 90%

Section: Qualitative Considerationsmentioning

confidence: 99%

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Proton-neutron multiplets in96Y

Brant

Lhersonneau

Stolzenwald

et al. 1988

Z. Physik A - Atomic Nuclei

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“…To the 8 + , spherical isomer at 1140 keV in 96 Y [57] the (πg 9/2 , νg 7/2 ) 8 + configuration, was assigned [46,52]. The isomer decays by the νg 7/2 → πg 9/2 G-T transition to the 8 + spherical level at 4389.8 keV in 96 Zr having the (πg 2 9/2 ) 8 + configuration [46,63]. In the semimagic 96 Zr, the (πg 2 9/2 ) 8 + , 2-q.p.…”

mentioning

confidence: 99%

Shape coexistence in the odd-odd nucleus Y98 : The role of the g9/2 neutron extruder

Urban¹,

Czerwiński²,

Kurpeta³

et al. 2017

Phys. Rev. C

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Excited states in 98 Y, populated in neutron-induced fission of 235 U and in spontaneous fission of 248 Cm and 252 Cf, have been studied by means of γ spectroscopy using the Lohengrin fissionfragment separator at ILL Grenoble and the EXILL, Eurogam2 and Gammasphere Ge arrays. Two new isomers have been found in 98 Y, a deformed one with T 1/2 =180(7) ns and a rotational band on top of it, and a spherical one with T 1/2 = 0.45(15) µs, analogous to the 8 + , isomer in 96 Y, corresponding to the (νg 7/2 , πg 9/2) 8 + spherical configuration. Using the JYFLTRAP Penning trap an accurate excitation energy of 465.7(7) keV has been determined for the 2.36-s isomer in 98 Y. This result and the studies of excited levels in 98 Zr, populated in β − decay of the isomer, indicate a new spin-parity, I π =(7) + for the isomer. The high spin and the decay properties of this isomer suggest the presence of the 9/2 + [404] neutron extruder orbital in its structure. This is consistent with the large deformation of the isomer, reported recently. The present work does not provide arguments to support the special role of the νg 7/2 − πg 9/2 interaction (the spin-orbit-partner, SOP, mechanism).

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“…It has recently been shown that the Z=40 proton and N=56 neutron subshells are almost completely closed at 96Zr [1][2][3] and quadrupole collectivity is restricted to excited multiparticle-multihole configurations which mix weakly with the spherical ground state configuration. It has recently been shown that the Z=40 proton and N=56 neutron subshells are almost completely closed at 96Zr [1][2][3] and quadrupole collectivity is restricted to excited multiparticle-multihole configurations which mix weakly with the spherical ground state configuration.…”

mentioning

confidence: 99%