Deformation and Collectivity in Doubly Magic Pb 208

J. Henderson; J. Heery; M. Rocchini; M. Siciliano; N. Sensharma; A. D. Ayangeakaa; R. V.F. Janssens; T. M. Kowalewski; Abhishek; P. D. Stevenson; E. Yüksel; B. A. Brown; T. R. Rodriguez; L. M. Robledo; C. Y. Wu; S. Kisyov; C. Müller-Gatermann; V. Bildstein; L. Canete; C. M. Campbell; S. Carmichael; M. P. Carpenter; W. N. Catford; P. Copp; C. Cousins; M. Devlin; D. T. Doherty; P. E. Garrett; U. Garg; L. P. Gaffney; K. Hadynska-Klek; D. J. Hartley; S. F. Hicks; H. Jayatissa; S. R. Johnson; D. Kalaydjieva; F. Kondev; D. Lascar; T. Lauritsen; G. Lotay; N. Marchini; M. Matejska-Minda; S. Nandi; A. Nannini; C. O'Shea; S. Pascu; C. J. Paxman; A. Perkoff; E. E. Peters; Zs Podolyák; A. Radich; R. Rathod; B. J. Reed; P. H. Regan; W. Reviol; E. Rubino; R. Russell; D. Seweryniak; J. R. Vanhoy; G. L. Wilson; K. Wrzosek-Lipska; S. W. Yates; I. Zanon

doi:10.1103/PhysRevLett.134.062502

Deformation and Collectivity in Doubly Magic Pb 208

J. Henderson
, J. Heery
, M. Rocchini
, M. Siciliano
, N. Sensharma
, A. D. Ayangeakaa
, R. V.F. Janssens
, T. M. Kowalewski
, Abhishek
, P. D. Stevenson
, E. Yüksel
, B. A. Brown
, T. R. Rodriguez
, L. M. Robledo
, C. Y. Wu
, S. Kisyov
, C. Müller-Gatermann
, V. Bildstein
, L. Canete
, C. M. Campbell

S. Carmichael, M. P. Carpenter, W. N. Catford, P. Copp, C. Cousins, M. Devlin, D. T. Doherty, P. E. Garrett, U. Garg, L. P. Gaffney, K. Hadynska-Klek, D. J. Hartley, S. F. Hicks, H. Jayatissa, S. R. Johnson, D. Kalaydjieva, F. Kondev, D. Lascar, T. Lauritsen, G. Lotay, N. Marchini, M. Matejska-Minda, S. Nandi, A. Nannini, C. O'Shea, S. Pascu, C. J. Paxman, A. Perkoff, E. E. Peters, Zs Podolyák, A. Radich, R. Rathod, B. J. Reed, P. H. Regan, W. Reviol, E. Rubino, R. Russell, D. Seweryniak, J. R. Vanhoy, G. L. Wilson, K. Wrzosek-Lipska, S. W. Yates, I. Zanon

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

10 Scopus citations

Abstract

Lead-208 is the heaviest known doubly magic nucleus and its structure is therefore of special interest. Despite this magicity, which acts to provide a strong restorative force toward sphericity, it is known to exhibit both strong octupole correlations and some of the strongest quadrupole collectivity observed in doubly magic systems. In this Letter, we employ state-of-the-art experimental equipment to conclusively demonstrate, through four Coulomb-excitation measurements, the presence of a large, negative, spectroscopic quadrupole moment for both the vibrational octupole 31- and quadrupole 21+ state, indicative of a preference for prolate deformation of the states. The observed quadrupole moment is discussed in the context of the expected splitting of the 3- - 3- two-phonon states, due to the coupling of the quadrupole and octupole motion. These results are compared with theoretical values from three different methods, which are unable to reproduce both the sign and magnitude of this deformation. Thus, in spite of its well-studied nature, Pb208 remains a puzzle for our understanding of nuclear structure.

Original language	English
Article number	062502
Journal	Physical Review Letters
Volume	134
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.134.062502
State	Published - Feb 14 2025

Bibliographical note

Publisher Copyright:
© 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Funding

The authors thank the beam-delivery team at the ATLAS facility of Argonne National Laboratory for providing the beams. Work at the University of Surrey was supported under UKRI Future Leaders Fellowship Grant No. MR/T022264/1. Work at the University of Surrey was supported under the Science and Technologies Facilities Council (STFC) under Grant No. ST/V001108/1. Work at the University of Liverpool was supported by STFC. Work was supported by the NSF under Grants No. PHY-2208137, No. PHY-2011890, No. PHY-1913028, and No. PHY-2110365. Work of Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. Work at Lawrence Livermore National Laboratory was performed under the auspices of the U.S. Department of Energy under Contract No. DE-AC52-07NA27344. Work at UNC is sponsored by the U.S. Department of Energy under Grants No. DE-FG02-97ER41041 (UNC) and No. DE-FG02-97ER41033 (TUNL). Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy (Contract No. 89233218CNA000001). Work was supported under U.S. Department of Energy under Contract No. DE-SC0021243. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DEAC02-05CH11231 (LBNL). GRETINA was funded by the U.S. DOE, Office of Science, Office of Nuclear Physics, and operated by the ANL and LBNL contract numbers above. This research uses resources of ANL's ATLAS facility, which is a U.S. Department of Energy Office of Science User facility. Work was supported by the National Science Centre, Poland under Grant No. 2023/50/E/ST2/00621. The authors thank the beam-delivery team at the ATLAS facility of Argonne National Laboratory for providing the beams. Work at the University of Surrey was supported under UKRI Future Leaders Fellowship Grant No. MR/T022264/1. Work at the University of Surrey was supported under the Science and Technologies Facilities Council (STFC) under Grant No. ST/V001108/1. Work at the University of Liverpool was supported by STFC. Work was supported by the NSF under Grants No. PHY-2208137, No. PHY-2011890, No. PHY-1913028, and No. PHY-2110365. Work of Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. Work at Lawrence Livermore National Laboratory was performed under the auspices of the U.S. Department of Energy under Contract No. DE-AC52-07NA27344. Work at UNC is sponsored by the U.S. Department of Energy under Grants No. DE-FG02-97ER41041 (UNC) and No. DE-FG02-97ER41033 (TUNL). Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy (Contract No. 89233218CNA000001). Work was supported under U.S. Department of Energy under Contract No. DE-SC0021243. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DEAC02-05CH11231 (LBNL). GRETINA was funded by the U.S. DOE, Office of Science, Office of Nuclear Physics, and operated by the ANL and LBNL contract numbers above. This research uses resources of ANL’s ATLAS facility, which is a U.S. Department of Energy Office of Science User facility. Work was supported by the National Science Centre, Poland under Grant No. 2023/50/E/ST2/00621.

Funders	Funder number
TUNL DOE
U.S. Department of Energy
Argonne National Laboratory
Lawrence Berkeley National Laboratory
Office of Science Programs
UK Industrial Decarbonization Research and Innovation Centre
Science and Technology Facilities Council	ST/V001108/1, ST/Y003020/1
National Nuclear Security Administration	DE-SC0021243, 89233218CNA000001, DEAC02-05CH11231
Narodowe Centrum Nauki	2023/50/E/ST2/00621
University of North Carolina and North Carolina State University	DE-FG02-97ER41033
???publication-publication-funding-organisation-not-added???	MR/T022264/1
Institute for Nuclear Physics	DE-AC02-06CH11357, DE-AC52-07NA27344, DE-FG02-97ER41041
Neurosciences Foundation	PHY-2110365, PHY-2208137, PHY-2011890, PHY-1913028

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.134.062502

Cite this

Henderson, J., Heery, J., Rocchini, M., Siciliano, M., Sensharma, N., Ayangeakaa, A. D., Janssens, R. V. F., Kowalewski, T. M., Abhishek, Stevenson, P. D., Yüksel, E., Brown, B. A., Rodriguez, T. R., Robledo, L. M., Wu, C. Y., Kisyov, S., Müller-Gatermann, C., Bildstein, V., Canete, L., ... Zanon, I. (2025). Deformation and Collectivity in Doubly Magic Pb 208. Physical Review Letters, 134(6), Article 062502. https://doi.org/10.1103/PhysRevLett.134.062502

@article{ef363d04d0c945fab67e952836cf7793,

title = "Deformation and Collectivity in Doubly Magic Pb 208",

abstract = "Lead-208 is the heaviest known doubly magic nucleus and its structure is therefore of special interest. Despite this magicity, which acts to provide a strong restorative force toward sphericity, it is known to exhibit both strong octupole correlations and some of the strongest quadrupole collectivity observed in doubly magic systems. In this Letter, we employ state-of-the-art experimental equipment to conclusively demonstrate, through four Coulomb-excitation measurements, the presence of a large, negative, spectroscopic quadrupole moment for both the vibrational octupole 31- and quadrupole 21+ state, indicative of a preference for prolate deformation of the states. The observed quadrupole moment is discussed in the context of the expected splitting of the 3- - 3- two-phonon states, due to the coupling of the quadrupole and octupole motion. These results are compared with theoretical values from three different methods, which are unable to reproduce both the sign and magnitude of this deformation. Thus, in spite of its well-studied nature, Pb208 remains a puzzle for our understanding of nuclear structure.",

author = "J. Henderson and J. Heery and M. Rocchini and M. Siciliano and N. Sensharma and Ayangeakaa, \{A. D.\} and Janssens, \{R. V.F.\} and Kowalewski, \{T. M.\} and Abhishek and Stevenson, \{P. D.\} and E. Y{\"u}ksel and Brown, \{B. A.\} and Rodriguez, \{T. R.\} and Robledo, \{L. M.\} and Wu, \{C. Y.\} and S. Kisyov and C. M{\"u}ller-Gatermann and V. Bildstein and L. Canete and Campbell, \{C. M.\} and S. Carmichael and Carpenter, \{M. P.\} and Catford, \{W. N.\} and P. Copp and C. Cousins and M. Devlin and Doherty, \{D. T.\} and Garrett, \{P. E.\} and U. Garg and Gaffney, \{L. P.\} and K. Hadynska-Klek and Hartley, \{D. J.\} and Hicks, \{S. F.\} and H. Jayatissa and Johnson, \{S. R.\} and D. Kalaydjieva and F. Kondev and D. Lascar and T. Lauritsen and G. Lotay and N. Marchini and M. Matejska-Minda and S. Nandi and A. Nannini and C. O'Shea and S. Pascu and Paxman, \{C. J.\} and A. Perkoff and Peters, \{E. E.\} and Zs Podoly{\'a}k and A. Radich and R. Rathod and Reed, \{B. J.\} and Regan, \{P. H.\} and W. Reviol and E. Rubino and R. Russell and D. Seweryniak and Vanhoy, \{J. R.\} and Wilson, \{G. L.\} and K. Wrzosek-Lipska and Yates, \{S. W.\} and I. Zanon",

note = "Publisher Copyright: {\textcopyright} 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",

year = "2025",

month = feb,

day = "14",

doi = "10.1103/PhysRevLett.134.062502",

language = "English",

volume = "134",

number = "6",

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Henderson, J, Heery, J, Rocchini, M, Siciliano, M, Sensharma, N, Ayangeakaa, AD, Janssens, RVF, Kowalewski, TM, Abhishek, Stevenson, PD, Yüksel, E, Brown, BA, Rodriguez, TR, Robledo, LM, Wu, CY, Kisyov, S, Müller-Gatermann, C, Bildstein, V, Canete, L, Campbell, CM, Carmichael, S, Carpenter, MP, Catford, WN, Copp, P, Cousins, C, Devlin, M, Doherty, DT, Garrett, PE, Garg, U, Gaffney, LP, Hadynska-Klek, K, Hartley, DJ, Hicks, SF, Jayatissa, H, Johnson, SR, Kalaydjieva, D, Kondev, F, Lascar, D, Lauritsen, T, Lotay, G, Marchini, N, Matejska-Minda, M, Nandi, S, Nannini, A, O'Shea, C, Pascu, S, Paxman, CJ, Perkoff, A, Peters, EE, Podolyák, Z, Radich, A, Rathod, R, Reed, BJ, Regan, PH, Reviol, W, Rubino, E, Russell, R, Seweryniak, D, Vanhoy, JR, Wilson, GL, Wrzosek-Lipska, K, Yates, SW & Zanon, I 2025, 'Deformation and Collectivity in Doubly Magic Pb 208', Physical Review Letters, vol. 134, no. 6, 062502. https://doi.org/10.1103/PhysRevLett.134.062502

TY - JOUR

T1 - Deformation and Collectivity in Doubly Magic Pb 208

AU - Henderson, J.

AU - Heery, J.

AU - Rocchini, M.

AU - Siciliano, M.

AU - Sensharma, N.

AU - Ayangeakaa, A. D.

AU - Janssens, R. V.F.

AU - Kowalewski, T. M.

AU - Abhishek,

AU - Stevenson, P. D.

AU - Yüksel, E.

AU - Brown, B. A.

AU - Rodriguez, T. R.

AU - Robledo, L. M.

AU - Wu, C. Y.

AU - Kisyov, S.

AU - Müller-Gatermann, C.

AU - Bildstein, V.

AU - Canete, L.

AU - Campbell, C. M.

AU - Carmichael, S.

AU - Carpenter, M. P.

AU - Catford, W. N.

AU - Copp, P.

AU - Cousins, C.

AU - Devlin, M.

AU - Doherty, D. T.

AU - Garrett, P. E.

AU - Garg, U.

AU - Gaffney, L. P.

AU - Hadynska-Klek, K.

AU - Hartley, D. J.

AU - Hicks, S. F.

AU - Jayatissa, H.

AU - Johnson, S. R.

AU - Kalaydjieva, D.

AU - Kondev, F.

AU - Lascar, D.

AU - Lauritsen, T.

AU - Lotay, G.

AU - Marchini, N.

AU - Matejska-Minda, M.

AU - Nandi, S.

AU - Nannini, A.

AU - O'Shea, C.

AU - Pascu, S.

AU - Paxman, C. J.

AU - Perkoff, A.

AU - Peters, E. E.

AU - Podolyák, Zs

AU - Radich, A.

AU - Rathod, R.

AU - Reed, B. J.

AU - Regan, P. H.

AU - Reviol, W.

AU - Rubino, E.

AU - Russell, R.

AU - Seweryniak, D.

AU - Vanhoy, J. R.

AU - Wilson, G. L.

AU - Wrzosek-Lipska, K.

AU - Yates, S. W.

AU - Zanon, I.

N1 - Publisher Copyright: © 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2025/2/14

Y1 - 2025/2/14

N2 - Lead-208 is the heaviest known doubly magic nucleus and its structure is therefore of special interest. Despite this magicity, which acts to provide a strong restorative force toward sphericity, it is known to exhibit both strong octupole correlations and some of the strongest quadrupole collectivity observed in doubly magic systems. In this Letter, we employ state-of-the-art experimental equipment to conclusively demonstrate, through four Coulomb-excitation measurements, the presence of a large, negative, spectroscopic quadrupole moment for both the vibrational octupole 31- and quadrupole 21+ state, indicative of a preference for prolate deformation of the states. The observed quadrupole moment is discussed in the context of the expected splitting of the 3- - 3- two-phonon states, due to the coupling of the quadrupole and octupole motion. These results are compared with theoretical values from three different methods, which are unable to reproduce both the sign and magnitude of this deformation. Thus, in spite of its well-studied nature, Pb208 remains a puzzle for our understanding of nuclear structure.

AB - Lead-208 is the heaviest known doubly magic nucleus and its structure is therefore of special interest. Despite this magicity, which acts to provide a strong restorative force toward sphericity, it is known to exhibit both strong octupole correlations and some of the strongest quadrupole collectivity observed in doubly magic systems. In this Letter, we employ state-of-the-art experimental equipment to conclusively demonstrate, through four Coulomb-excitation measurements, the presence of a large, negative, spectroscopic quadrupole moment for both the vibrational octupole 31- and quadrupole 21+ state, indicative of a preference for prolate deformation of the states. The observed quadrupole moment is discussed in the context of the expected splitting of the 3- - 3- two-phonon states, due to the coupling of the quadrupole and octupole motion. These results are compared with theoretical values from three different methods, which are unable to reproduce both the sign and magnitude of this deformation. Thus, in spite of its well-studied nature, Pb208 remains a puzzle for our understanding of nuclear structure.

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UR - https://www.scopus.com/pages/publications/85218084378#tab=citedBy

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DO - 10.1103/PhysRevLett.134.062502

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VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Deformation and Collectivity in Doubly Magic Pb 208

Abstract

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