Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes

B. Elman, A. Gade, D. Weisshaar, D. Barofsky, D. Bazin, P.C. Bender, M. Bowry, M. Hjorth-Jensen, K.W. Kemper, S. Lipschutz, E. Lunderberg, N. Sachmpazidi, N. Terpstra, W.B. Walters, A. Westerberg, S.J. Williams, K. Wimmer

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report B(E2;01+→2n+) strengths for the neutron-rich 88,90Kr and 86Se isotopes from intermediate-energy Coulomb excitation. The electric quadrupole transition strengths to the first 2+ states complete, with considerably improved uncertainties, the evolution of quadrupole collectivity in the Kr and Se isotopes approaching N=60, for which 90Kr and 86Se had previously been the most uncertain. We also report significant excitation strength to several higher-lying 2+ states in the krypton isotopes. This fragmentation of B(E2) strength in 88,90Kr confirms shell-model calculations in the π(fpg)-ν(sdgh) shell with an only minimally tuned shell-model setup that is based on a nucleon-nucleon interaction derived from effective field theory and effective charges adjusted to 86Kr.
Original languageEnglish
Article number044332
Number of pages8
JournalPhysical Review C
Volume96
Issue number4
DOIs
Publication statusPublished - 27 Oct 2017
Externally publishedYes

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isotopes
quadrupoles
neutrons
krypton isotopes
nucleon-nucleon interactions
excitation
fragmentation
energy

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Elman, B., Gade, A., Weisshaar, D., Barofsky, D., Bazin, D., Bender, P. C., ... Wimmer, K. (2017). Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes. Physical Review C, 96(4), [044332]. https://doi.org/10.1103/PhysRevC.96.044332
Elman, B. ; Gade, A. ; Weisshaar, D. ; Barofsky, D. ; Bazin, D. ; Bender, P.C. ; Bowry, M. ; Hjorth-Jensen, M. ; Kemper, K.W. ; Lipschutz, S. ; Lunderberg, E. ; Sachmpazidi, N. ; Terpstra, N. ; Walters, W.B. ; Westerberg, A. ; Williams, S.J. ; Wimmer, K. / Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes. In: Physical Review C. 2017 ; Vol. 96, No. 4.
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abstract = "We report B(E2;01+→2n+) strengths for the neutron-rich 88,90Kr and 86Se isotopes from intermediate-energy Coulomb excitation. The electric quadrupole transition strengths to the first 2+ states complete, with considerably improved uncertainties, the evolution of quadrupole collectivity in the Kr and Se isotopes approaching N=60, for which 90Kr and 86Se had previously been the most uncertain. We also report significant excitation strength to several higher-lying 2+ states in the krypton isotopes. This fragmentation of B(E2) strength in 88,90Kr confirms shell-model calculations in the π(fpg)-ν(sdgh) shell with an only minimally tuned shell-model setup that is based on a nucleon-nucleon interaction derived from effective field theory and effective charges adjusted to 86Kr.",
author = "B. Elman and A. Gade and D. Weisshaar and D. Barofsky and D. Bazin and P.C. Bender and M. Bowry and M. Hjorth-Jensen and K.W. Kemper and S. Lipschutz and E. Lunderberg and N. Sachmpazidi and N. Terpstra and W.B. Walters and A. Westerberg and S.J. Williams and K. Wimmer",
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Elman, B, Gade, A, Weisshaar, D, Barofsky, D, Bazin, D, Bender, PC, Bowry, M, Hjorth-Jensen, M, Kemper, KW, Lipschutz, S, Lunderberg, E, Sachmpazidi, N, Terpstra, N, Walters, WB, Westerberg, A, Williams, SJ & Wimmer, K 2017, 'Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes', Physical Review C, vol. 96, no. 4, 044332. https://doi.org/10.1103/PhysRevC.96.044332

Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes. / Elman, B.; Gade, A.; Weisshaar, D.; Barofsky, D.; Bazin, D.; Bender, P.C.; Bowry, M.; Hjorth-Jensen, M.; Kemper, K.W.; Lipschutz, S.; Lunderberg, E.; Sachmpazidi, N.; Terpstra, N.; Walters, W.B.; Westerberg, A.; Williams, S.J.; Wimmer, K.

In: Physical Review C, Vol. 96, No. 4, 044332, 27.10.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes

AU - Elman, B.

AU - Gade, A.

AU - Weisshaar, D.

AU - Barofsky, D.

AU - Bazin, D.

AU - Bender, P.C.

AU - Bowry, M.

AU - Hjorth-Jensen, M.

AU - Kemper, K.W.

AU - Lipschutz, S.

AU - Lunderberg, E.

AU - Sachmpazidi, N.

AU - Terpstra, N.

AU - Walters, W.B.

AU - Westerberg, A.

AU - Williams, S.J.

AU - Wimmer, K.

PY - 2017/10/27

Y1 - 2017/10/27

N2 - We report B(E2;01+→2n+) strengths for the neutron-rich 88,90Kr and 86Se isotopes from intermediate-energy Coulomb excitation. The electric quadrupole transition strengths to the first 2+ states complete, with considerably improved uncertainties, the evolution of quadrupole collectivity in the Kr and Se isotopes approaching N=60, for which 90Kr and 86Se had previously been the most uncertain. We also report significant excitation strength to several higher-lying 2+ states in the krypton isotopes. This fragmentation of B(E2) strength in 88,90Kr confirms shell-model calculations in the π(fpg)-ν(sdgh) shell with an only minimally tuned shell-model setup that is based on a nucleon-nucleon interaction derived from effective field theory and effective charges adjusted to 86Kr.

AB - We report B(E2;01+→2n+) strengths for the neutron-rich 88,90Kr and 86Se isotopes from intermediate-energy Coulomb excitation. The electric quadrupole transition strengths to the first 2+ states complete, with considerably improved uncertainties, the evolution of quadrupole collectivity in the Kr and Se isotopes approaching N=60, for which 90Kr and 86Se had previously been the most uncertain. We also report significant excitation strength to several higher-lying 2+ states in the krypton isotopes. This fragmentation of B(E2) strength in 88,90Kr confirms shell-model calculations in the π(fpg)-ν(sdgh) shell with an only minimally tuned shell-model setup that is based on a nucleon-nucleon interaction derived from effective field theory and effective charges adjusted to 86Kr.

U2 - 10.1103/PhysRevC.96.044332

DO - 10.1103/PhysRevC.96.044332

M3 - Article

VL - 96

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 4

M1 - 044332

ER -

Elman B, Gade A, Weisshaar D, Barofsky D, Bazin D, Bender PC et al. Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes. Physical Review C. 2017 Oct 27;96(4). 044332. https://doi.org/10.1103/PhysRevC.96.044332