Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126

L. Morrison; K. Hadyńska-Klȩk; Zs Podolyák; L. P. Gaffney; M. Zielińska; B. A. Brown; H. Grawe; P. D. Stevenson; T. Berry; A. Boukhari; M. Brunet; R. Canavan; R. Catherall; J. Cederkäll; S. J. Colosimo; J. G. Cubiss; H. De Witte; D. T. Doherty; Ch Fransen; G. Georgiev; E. Giannopoulos; M. Górska; H. Hess; L. Kaya; T. Kröll; N. Lalović; B. Marsh; Y. Martinez Palenzuela; G. O'Neill; J. Pakarinen; J. P. Ramos; P. Reiter; J. A. Rodriguez; D. Rosiak; S. Rothe; M. Rudigier; M. Siciliano; E. C. Simpson; J. Snall; P. Spagnoletti; S. Thiel; N. Warr; F. Wenander; R. Zidarova

doi:10.1016/j.physletb.2023.137675

Quadrupole and octupole collectivity in the semi-magic nucleus ₈₀²⁰⁶Hg₁₂₆

L. Morrison^*, K. Hadyńska-Klȩk, Zs Podolyák, L. P. Gaffney, M. Zielińska, B. A. Brown, H. Grawe, P. D. Stevenson, T. Berry, A. Boukhari, M. Brunet, R. Canavan, R. Catherall, J. Cederkäll, S. J. Colosimo, J. G. Cubiss, H. De Witte, D. T. Doherty, Ch Fransen, G. GeorgievE. Giannopoulos, M. Górska, H. Hess, L. Kaya, T. Kröll, N. Lalović, B. Marsh, Y. Martinez Palenzuela, G. O'Neill, J. Pakarinen, J. P. Ramos, P. Reiter, J. A. Rodriguez, D. Rosiak, S. Rothe, M. Rudigier, M. Siciliano, E. C. Simpson, J. Snall, P. Spagnoletti, S. Thiel, N. Warr, F. Wenander, R. Zidarova

^*Corresponding author for this work

Department of Nuclear Physics & Accelerator Applications

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus ²⁰⁶Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in ²⁰⁶Hg were observed. From the data, a reduced transition strength B(E2;2₁⁺→0₁⁺)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of ²⁰⁸Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30₋₁₃⁺¹⁰ W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus ²⁰⁸Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process.

Original language	English
Article number	137675
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	838
DOIs	https://doi.org/10.1016/j.physletb.2023.137675
Publication status	Published - 10 Mar 2023

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Morrison, L., Hadyńska-Klȩk, K., Podolyák, Z., Gaffney, L. P., Zielińska, M., Brown, B. A., Grawe, H., Stevenson, P. D., Berry, T., Boukhari, A., Brunet, M., Canavan, R., Catherall, R., Cederkäll, J., Colosimo, S. J., Cubiss, J. G., De Witte, H., Doherty, D. T., Fransen, C., ... Zidarova, R. (2023). Quadrupole and octupole collectivity in the semi-magic nucleus ₈₀²⁰⁶Hg₁₂₆. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 838, Article 137675. https://doi.org/10.1016/j.physletb.2023.137675

@article{d0186e40df9e4823a029a7fa82825aa6,

title = "Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126",

abstract = "The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E2;21+→01+)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of 208Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30−13+10 W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus 208Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process.",

author = "L. Morrison and K. Hady{\'n}ska-Klȩk and Zs Podoly{\'a}k and Gaffney, {L. P.} and M. Zieli{\'n}ska and Brown, {B. A.} and H. Grawe and Stevenson, {P. D.} and T. Berry and A. Boukhari and M. Brunet and R. Canavan and R. Catherall and J. Cederk{\"a}ll and Colosimo, {S. J.} and Cubiss, {J. G.} and {De Witte}, H. and Doherty, {D. T.} and Ch Fransen and G. Georgiev and E. Giannopoulos and M. G{\'o}rska and H. Hess and L. Kaya and T. Kr{\"o}ll and N. Lalovi{\'c} and B. Marsh and {Martinez Palenzuela}, Y. and G. O'Neill and J. Pakarinen and Ramos, {J. P.} and P. Reiter and Rodriguez, {J. A.} and D. Rosiak and S. Rothe and M. Rudigier and M. Siciliano and Simpson, {E. C.} and J. Snall and P. Spagnoletti and S. Thiel and N. Warr and F. Wenander and R. Zidarova",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s)",

year = "2023",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2023.137675",

language = "English",

volume = "838",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Morrison, L, Hadyńska-Klȩk, K, Podolyák, Z, Gaffney, LP, Zielińska, M, Brown, BA, Grawe, H, Stevenson, PD, Berry, T, Boukhari, A, Brunet, M, Canavan, R, Catherall, R, Cederkäll, J, Colosimo, SJ, Cubiss, JG, De Witte, H, Doherty, DT, Fransen, C, Georgiev, G, Giannopoulos, E, Górska, M, Hess, H, Kaya, L, Kröll, T, Lalović, N, Marsh, B, Martinez Palenzuela, Y, O'Neill, G, Pakarinen, J, Ramos, JP, Reiter, P, Rodriguez, JA, Rosiak, D, Rothe, S, Rudigier, M, Siciliano, M, Simpson, EC, Snall, J, Spagnoletti, P, Thiel, S, Warr, N, Wenander, F & Zidarova, R 2023, 'Quadrupole and octupole collectivity in the semi-magic nucleus ₈₀²⁰⁶Hg₁₂₆', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 838, 137675. https://doi.org/10.1016/j.physletb.2023.137675

TY - JOUR

T1 - Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126

AU - Morrison, L.

AU - Hadyńska-Klȩk, K.

AU - Podolyák, Zs

AU - Gaffney, L. P.

AU - Zielińska, M.

AU - Brown, B. A.

AU - Grawe, H.

AU - Stevenson, P. D.

AU - Berry, T.

AU - Boukhari, A.

AU - Brunet, M.

AU - Canavan, R.

AU - Catherall, R.

AU - Cederkäll, J.

AU - Colosimo, S. J.

AU - Cubiss, J. G.

AU - De Witte, H.

AU - Doherty, D. T.

AU - Fransen, Ch

AU - Georgiev, G.

AU - Giannopoulos, E.

AU - Górska, M.

AU - Hess, H.

AU - Kaya, L.

AU - Kröll, T.

AU - Lalović, N.

AU - Marsh, B.

AU - Martinez Palenzuela, Y.

AU - O'Neill, G.

AU - Pakarinen, J.

AU - Ramos, J. P.

AU - Reiter, P.

AU - Rodriguez, J. A.

AU - Rosiak, D.

AU - Rothe, S.

AU - Rudigier, M.

AU - Siciliano, M.

AU - Simpson, E. C.

AU - Snall, J.

AU - Spagnoletti, P.

AU - Thiel, S.

AU - Warr, N.

AU - Wenander, F.

AU - Zidarova, R.

PY - 2023/3/10

Y1 - 2023/3/10

N2 - The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E2;21+→01+)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of 208Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30−13+10 W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus 208Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process.

AB - The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E2;21+→01+)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of 208Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30−13+10 W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus 208Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process.

UR - http://www.scopus.com/inward/record.url?scp=85146728684&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2023.137675

DO - 10.1016/j.physletb.2023.137675

M3 - Article

SN - 0370-2693

VL - 838

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 137675

ER -

Quadrupole and octupole collectivity in the semi-magic nucleus ₈₀²⁰⁶Hg₁₂₆

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