Lifetime measurements of the 3-, 4-, and 6- intraband states in the neutron-rich, odd-odd 96Rb nucleus were performed at the LOHENGRIN spectrometer of Institut Laue-Langevin, using thermal-neutron-induced fission of 235U and fast-timing techniques with LaBr3(Ce) scintillator detectors. The nanosecond isomeric nature of the (3-) bandhead was established as well as the β2=0.39(3) deformation parameter of the band, pointing to a robust deformation in 96Rb. Moreover, a hindered B(E2) value of 3.9_-13^+19×(10-2) W.u. was found for the γ decay of the deformed 4- state to the spherical 2- ground state. A retardation was also found for the 3- → 2- transition, possibly due to the shape change and giving strong support to a shape coexistence scenario in this nucleus, at the borders of the island of deformation at N=60. Analogies with the structure of the 98Y isotone are discussed.
Description
Phys. Rev. C 108, 064301 (2023) - Lifetime measurements in $^{96}\mathrm{Rb}$ via fast-timing techniques: Investigating shape coexistence at $A\ensuremath{\simeq}100$
%0 Journal Article
%1 PhysRevC.108.064301
%A Gamba, E. R.
%A Bottoni, S.
%A Iskra, Ł. W.
%A Zavaglia, C.
%A Leoni, S.
%A Fornal, B.
%A Cieplicka-Oryńczak, N.
%A Benzoni, G.
%A Colombi, G.
%A Crespi, F. C. L.
%A Esmaylzadeh, A.
%A Jentschel, M.
%A Jolie, J.
%A Karayonchev, V.
%A Kim, Y. H.
%A Knafla, L.
%A Köster, U.
%A Ley, M.
%A Mǎrginean, N.
%A Mǎrginean, R.
%A Michelagnoli, C.
%A Polettini, M.
%A Porzio, C.
%A Régis, J-.M.
%A Reygadas, D.
%A Turturica, A.
%D 2023
%I American Physical Society
%J Phys. Rev. C
%K jolie myown
%N 6
%P 064301
%R 10.1103/PhysRevC.108.064301
%T Lifetime measurements in 96Rb via fast-timing techniques: Investigating shape coexistence at A≃100
%U https://link.aps.org/doi/10.1103/PhysRevC.108.064301
%V 108
%X Lifetime measurements of the 3-, 4-, and 6- intraband states in the neutron-rich, odd-odd 96Rb nucleus were performed at the LOHENGRIN spectrometer of Institut Laue-Langevin, using thermal-neutron-induced fission of 235U and fast-timing techniques with LaBr3(Ce) scintillator detectors. The nanosecond isomeric nature of the (3-) bandhead was established as well as the β2=0.39(3) deformation parameter of the band, pointing to a robust deformation in 96Rb. Moreover, a hindered B(E2) value of 3.9_-13^+19×(10-2) W.u. was found for the γ decay of the deformed 4- state to the spherical 2- ground state. A retardation was also found for the 3- → 2- transition, possibly due to the shape change and giving strong support to a shape coexistence scenario in this nucleus, at the borders of the island of deformation at N=60. Analogies with the structure of the 98Y isotone are discussed.
@article{PhysRevC.108.064301,
abstract = {Lifetime measurements of the 3-, 4-, and 6- intraband states in the neutron-rich, odd-odd 96Rb nucleus were performed at the LOHENGRIN spectrometer of Institut Laue-Langevin, using thermal-neutron-induced fission of 235U and fast-timing techniques with LaBr3(Ce) scintillator detectors. The nanosecond isomeric nature of the (3-) bandhead was established as well as the β2=0.39(3) deformation parameter of the band, pointing to a robust deformation in 96Rb. Moreover, a hindered B(E2) value of 3.9_-13^+19×(10-2) W.u. was found for the γ decay of the deformed 4- state to the spherical 2- ground state. A retardation was also found for the 3- → 2- transition, possibly due to the shape change and giving strong support to a shape coexistence scenario in this nucleus, at the borders of the island of deformation at N=60. Analogies with the structure of the 98Y isotone are discussed.},
added-at = {2024-01-15T10:32:29.000+0100},
author = {Gamba, E. R. and Bottoni, S. and Iskra, Ł. W. and Zavaglia, C. and Leoni, S. and Fornal, B. and Cieplicka-Oryńczak, N. and Benzoni, G. and Colombi, G. and Crespi, F. C. L. and Esmaylzadeh, A. and Jentschel, M. and Jolie, J. and Karayonchev, V. and Kim, Y. H. and Knafla, L. and Köster, U. and Ley, M. and Mǎrginean, N. and Mǎrginean, R. and Michelagnoli, C. and Polettini, M. and Porzio, C. and Régis, J-.M. and Reygadas, D. and Turturica, A.},
biburl = {https://www.bibsonomy.org/bibtex/298cb095f0498cec6e10498a382368595/ikpcologne},
description = {Phys. Rev. C 108, 064301 (2023) - Lifetime measurements in $^{96}\mathrm{Rb}$ via fast-timing techniques: Investigating shape coexistence at $A\ensuremath{\simeq}100$},
doi = {10.1103/PhysRevC.108.064301},
interhash = {4466b8a8992d661eb003d3849efaf3d6},
intrahash = {98cb095f0498cec6e10498a382368595},
journal = {Phys. Rev. C},
keywords = {jolie myown},
month = dec,
number = 6,
numpages = {7},
pages = 064301,
publisher = {American Physical Society},
timestamp = {2024-01-15T10:32:29.000+0100},
title = {Lifetime measurements in 96Rb via fast-timing techniques: Investigating shape coexistence at A≃100},
url = {https://link.aps.org/doi/10.1103/PhysRevC.108.064301},
volume = 108,
year = 2023
}