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

doi:10.1103/PhysRevC.96.044332

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 journal › Article › peer-review

16 Citations (Scopus)

Abstract

We report B(E2;0₁⁺→2_n⁺) 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 language	English
Article number	044332
Number of pages	8
Journal	Physical Review C
Volume	96
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.96.044332
Publication status	Published - 27 Oct 2017
Externally published	Yes

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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. (2017). Quadrupole collectivity beyond N=50 in neutron-rich Se and Kr isotopes. Physical Review C, 96(4), Article 044332. https://doi.org/10.1103/PhysRevC.96.044332

@article{276f77d115cd4b8e88fb9454b243fa10,

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

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",

year = "2017",

month = oct,

day = "27",

doi = "10.1103/PhysRevC.96.044332",

language = "English",

volume = "96",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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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

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

SN - 2469-9985

VL - 96

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044332

ER -

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

Abstract

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