Increasing Octupole Collectivity across the Z=64 Isotopic Chain: B(E3) Values in Gd 150

S. Pascu; E. Yüksel; A Abhishek; P. Stevenson; G. H. Bhat; R. N. Mao; K. Nomura; C. Costache; Z. P. Li; N. Mǎrginean; C. Mihai; T. Naz; Zs Podolyák; P. H. Regan; A. E. Turturicǎ; R. Borcea; M. Boromiza; D. Bucurescu; S. Cǎlinescu; C. Clisu; A. Coman; I. Dinescu; S. Doshi; D. Filipescu; N. M. Florea; A. Gandhi; I. Gheorghe; A. Ionescu; R. Licǎ; R. Mǎrginean; R. E. Mihai; A. Mitu; N. Nazir; A. Negret; C. R. Niţǎ; E. B. O'Sullivan; C. Petrone; S. E. Poulton; J. A. Sheikh; L. Stan; S. Toma; G. Turturicǎ; S. Ujeniuc

doi:10.1103/PhysRevLett.134.092501

Increasing Octupole Collectivity across the Z=64 Isotopic Chain: B(E3) Values in Gd 150

S. Pascu
, E. Yüksel
, A Abhishek
, P. Stevenson
, G. H. Bhat
, R. N. Mao
, K. Nomura
, C. Costache
, Z. P. Li
, N. Mǎrginean
, C. Mihai
, T. Naz
, Zs Podolyák
, P. H. Regan
, A. E. Turturicǎ
, R. Borcea
, M. Boromiza
, D. Bucurescu
, S. Cǎlinescu
, C. Clisu

A. Coman, I. Dinescu, S. Doshi, D. Filipescu, N. M. Florea, A. Gandhi, I. Gheorghe, A. Ionescu, R. Licǎ, R. Mǎrginean, R. E. Mihai, A. Mitu, N. Nazir, A. Negret, C. R. Niţǎ, E. B. O'Sullivan, C. Petrone, S. E. Poulton, J. A. Sheikh, L. Stan, S. Toma, G. Turturicǎ, S. Ujeniuc

School of Arch, Tech and Eng

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

Abstract

An enhanced electric octupole (E3) strength of 45(5) W.u. has been measured for the 3-→0+ transition in Gd150, providing direct evidence for large octupole collectivity in this nucleus. The value was determined following two sensitive experiments, to measure the mean lifetime of the Jπ=3- level and the weak E3 decay branch direct to the ground state. The systematics of the E3 strength across the Gd isotopic chain reveals that enhanced octupole collectivity is obtained for Gd150. The increasing low-lying octupole strength in the Gd isotopes is analyzed with five state-of-the-art theoretical models. It is found to be best reproduced by quasiparticle random phase approximation calculations, providing a good understanding of octupole collectivity in the rare-earth region.

Original language	English
Article number	092501
Number of pages	7
Journal	Physical Review Letters
Volume	134
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.134.092501
Publication status	Published - 7 Mar 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.

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Pascu, S., Yüksel, E., Abhishek, A., Stevenson, P., Bhat, G. H., Mao, R. N., Nomura, K., Costache, C., Li, Z. P., Mǎrginean, N., Mihai, C., Naz, T., Podolyák, Z., Regan, P. H., Turturicǎ, A. E., Borcea, R., Boromiza, M., Bucurescu, D., Cǎlinescu, S., ... Ujeniuc, S. (2025). Increasing Octupole Collectivity across the Z=64 Isotopic Chain: B(E3) Values in Gd 150. Physical Review Letters, 134(9), Article 092501. https://doi.org/10.1103/PhysRevLett.134.092501

@article{a51189ced8c149a69ac56d8d69300fe5,

title = "Increasing Octupole Collectivity across the Z=64 Isotopic Chain: B(E3) Values in Gd 150",

abstract = "An enhanced electric octupole (E3) strength of 45(5) W.u. has been measured for the 3-→0+ transition in Gd150, providing direct evidence for large octupole collectivity in this nucleus. The value was determined following two sensitive experiments, to measure the mean lifetime of the Jπ=3- level and the weak E3 decay branch direct to the ground state. The systematics of the E3 strength across the Gd isotopic chain reveals that enhanced octupole collectivity is obtained for Gd150. The increasing low-lying octupole strength in the Gd isotopes is analyzed with five state-of-the-art theoretical models. It is found to be best reproduced by quasiparticle random phase approximation calculations, providing a good understanding of octupole collectivity in the rare-earth region.",

author = "S. Pascu and E. Y{\"u}ksel and A Abhishek and P. Stevenson and Bhat, \{G. H.\} and Mao, \{R. N.\} and K. Nomura and C. Costache and Li, \{Z. P.\} and N. Mǎrginean and C. Mihai and T. Naz and Zs Podoly{\'a}k and Regan, \{P. H.\} and Turturicǎ, \{A. E.\} and R. Borcea and M. Boromiza and D. Bucurescu and S. Cǎlinescu and C. Clisu and A. Coman and I. Dinescu and S. Doshi and D. Filipescu and Florea, \{N. M.\} and A. Gandhi and I. Gheorghe and A. Ionescu and R. Licǎ and R. Mǎrginean and Mihai, \{R. E.\} and A. Mitu and N. Nazir and A. Negret and Ni{\c t}ǎ, \{C. R.\} and O'Sullivan, \{E. B.\} and C. Petrone and Poulton, \{S. E.\} and Sheikh, \{J. A.\} and L. Stan and S. Toma and G. Turturicǎ and S. Ujeniuc",

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 = mar,

day = "7",

doi = "10.1103/PhysRevLett.134.092501",

language = "English",

volume = "134",

journal = "Physical Review Letters",

issn = "0031-9007",

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}

Pascu, S, Yüksel, E, Abhishek, A, Stevenson, P, Bhat, GH, Mao, RN, Nomura, K, Costache, C, Li, ZP, Mǎrginean, N, Mihai, C, Naz, T, Podolyák, Z, Regan, PH, Turturicǎ, AE, Borcea, R, Boromiza, M, Bucurescu, D, Cǎlinescu, S, Clisu, C, Coman, A, Dinescu, I, Doshi, S, Filipescu, D, Florea, NM, Gandhi, A, Gheorghe, I, Ionescu, A, Licǎ, R, Mǎrginean, R, Mihai, RE, Mitu, A, Nazir, N, Negret, A, Niţǎ, CR, O'Sullivan, EB, Petrone, C, Poulton, SE, Sheikh, JA, Stan, L, Toma, S, Turturicǎ, G & Ujeniuc, S 2025, 'Increasing Octupole Collectivity across the Z=64 Isotopic Chain: B(E3) Values in Gd 150', Physical Review Letters, vol. 134, no. 9, 092501. https://doi.org/10.1103/PhysRevLett.134.092501

TY - JOUR

T1 - Increasing Octupole Collectivity across the Z=64 Isotopic Chain

T2 - B(E3) Values in Gd 150

AU - Pascu, S.

AU - Yüksel, E.

AU - Abhishek, A

AU - Stevenson, P.

AU - Bhat, G. H.

AU - Mao, R. N.

AU - Nomura, K.

AU - Costache, C.

AU - Li, Z. P.

AU - Mǎrginean, N.

AU - Mihai, C.

AU - Naz, T.

AU - Podolyák, Zs

AU - Regan, P. H.

AU - Turturicǎ, A. E.

AU - Borcea, R.

AU - Boromiza, M.

AU - Bucurescu, D.

AU - Cǎlinescu, S.

AU - Clisu, C.

AU - Coman, A.

AU - Dinescu, I.

AU - Doshi, S.

AU - Filipescu, D.

AU - Florea, N. M.

AU - Gandhi, A.

AU - Gheorghe, I.

AU - Ionescu, A.

AU - Licǎ, R.

AU - Mǎrginean, R.

AU - Mihai, R. E.

AU - Mitu, A.

AU - Nazir, N.

AU - Negret, A.

AU - Niţǎ, C. R.

AU - O'Sullivan, E. B.

AU - Petrone, C.

AU - Poulton, S. E.

AU - Sheikh, J. A.

AU - Stan, L.

AU - Toma, S.

AU - Turturicǎ, G.

AU - Ujeniuc, S.

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 - 2025/3/7

Y1 - 2025/3/7

N2 - An enhanced electric octupole (E3) strength of 45(5) W.u. has been measured for the 3-→0+ transition in Gd150, providing direct evidence for large octupole collectivity in this nucleus. The value was determined following two sensitive experiments, to measure the mean lifetime of the Jπ=3- level and the weak E3 decay branch direct to the ground state. The systematics of the E3 strength across the Gd isotopic chain reveals that enhanced octupole collectivity is obtained for Gd150. The increasing low-lying octupole strength in the Gd isotopes is analyzed with five state-of-the-art theoretical models. It is found to be best reproduced by quasiparticle random phase approximation calculations, providing a good understanding of octupole collectivity in the rare-earth region.

AB - An enhanced electric octupole (E3) strength of 45(5) W.u. has been measured for the 3-→0+ transition in Gd150, providing direct evidence for large octupole collectivity in this nucleus. The value was determined following two sensitive experiments, to measure the mean lifetime of the Jπ=3- level and the weak E3 decay branch direct to the ground state. The systematics of the E3 strength across the Gd isotopic chain reveals that enhanced octupole collectivity is obtained for Gd150. The increasing low-lying octupole strength in the Gd isotopes is analyzed with five state-of-the-art theoretical models. It is found to be best reproduced by quasiparticle random phase approximation calculations, providing a good understanding of octupole collectivity in the rare-earth region.

UR - https://www.scopus.com/pages/publications/86000308709

U2 - 10.1103/PhysRevLett.134.092501

DO - 10.1103/PhysRevLett.134.092501

M3 - Article

C2 - 40131089

AN - SCOPUS:86000308709

SN - 0031-9007

VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 092501

ER -

Increasing Octupole Collectivity across the Z=64 Isotopic Chain: B(E3) Values in Gd 150

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