Observation of a new isomer in 185Au

X. Y. Fu; Z. Liu; A. N. Andreyev; C. F. Jiao; R. Y. Dong; W. Q. Zhang; H. Huang; W. Sun; Q. B. Chen; S. Q. Zhang; J. G. Li; X. H. Zhou; X. H. Yu; Q. B. Zeng; D. Seweryniak; B. Andel; S. Antalic; A. E. Barzakh; M. Block; A. Bronis; M. P. Carpenter; P. Copp; J. G. Cubiss; D. T. Doherty; P. Van Duppen; Z. Favier; F. Giacoppo; B. Kindler; F. G. Kondev; T. Lauritsen; B. Lommel; M. Al Monthery; P. Mosat; C. Raison; W. Reviol; G. Savard; S. Stolze; G. L. Wilson; B. Ding; S. Guo; C. Y. Guo; Y. B. Yu; Y. F. Wu

doi:10.1088/1674-1137/add70c

Observation of a new isomer in ¹⁸⁵Au

X. Y. Fu
, Z. Liu
, A. N. Andreyev
, C. F. Jiao
, R. Y. Dong
, W. Q. Zhang
, H. Huang
, W. Sun
, Q. B. Chen
, S. Q. Zhang
, J. G. Li
, X. H. Zhou
, X. H. Yu
, Q. B. Zeng
, D. Seweryniak
, B. Andel
, S. Antalic
, A. E. Barzakh
, M. Block
, A. Bronis

M. P. Carpenter, P. Copp, J. G. Cubiss, D. T. Doherty, P. Van Duppen, Z. Favier, F. Giacoppo, B. Kindler, F. G. Kondev, T. Lauritsen, B. Lommel, M. Al Monthery, P. Mosat, C. Raison, W. Reviol, G. Savard, S. Stolze, G. L. Wilson, B. Ding, S. Guo, C. Y. Guo, Y. B. Yu, Y. F. Wu

School of Physics and Electronic Science

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

1 Scopus citations

Abstract

Delayed γ-ray spectroscopy of ¹⁸⁵Au was studied at the Argonne Gas-Filled Analyzer. A new isomer at an excitation energy of 1504.2(4) keV with a half-life of 630(80) ns was identified via γ-γ coincidence analysis, decaying via a 294.8(3) keV transition. Based on Weisskopf estimates, the multipolarity of the 295 keV transition is assigned to be E1, M1, E2, or M2. Possible configurations for this new isomer are discussed based on configuration-constrained potential energy surface calculations.

Original language	English
Article number	084004
Journal	Chinese Physics C
Volume	49
Issue number	8
DOIs	https://doi.org/10.1088/1674-1137/add70c
State	Published - 1 Aug 2025

Keywords

isomer
mid-shell
PES calculation
shape deformation
three-quasiparticle state

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10.1088/1674-1137/add70c

Cite this

Fu, X. Y., Liu, Z., Andreyev, A. N., Jiao, C. F., Dong, R. Y., Zhang, W. Q., Huang, H., Sun, W., Chen, Q. B., Zhang, S. Q., Li, J. G., Zhou, X. H., Yu, X. H., Zeng, Q. B., Seweryniak, D., Andel, B., Antalic, S., Barzakh, A. E., Block, M., ... Wu, Y. F. (2025). Observation of a new isomer in ¹⁸⁵Au. Chinese Physics C, 49(8), Article 084004. https://doi.org/10.1088/1674-1137/add70c

@article{ca0d7d6ccbbf43b59e9866030ca25938,

title = "Observation of a new isomer in 185Au",

abstract = "Delayed γ-ray spectroscopy of 185Au was studied at the Argonne Gas-Filled Analyzer. A new isomer at an excitation energy of 1504.2(4) keV with a half-life of 630(80) ns was identified via γ-γ coincidence analysis, decaying via a 294.8(3) keV transition. Based on Weisskopf estimates, the multipolarity of the 295 keV transition is assigned to be E1, M1, E2, or M2. Possible configurations for this new isomer are discussed based on configuration-constrained potential energy surface calculations.",

keywords = "isomer, mid-shell, PES calculation, shape deformation, three-quasiparticle state",

author = "Fu, \{X. Y.\} and Z. Liu and Andreyev, \{A. N.\} and Jiao, \{C. F.\} and Dong, \{R. Y.\} and Zhang, \{W. Q.\} and H. Huang and W. Sun and Chen, \{Q. B.\} and Zhang, \{S. Q.\} and Li, \{J. G.\} and Zhou, \{X. H.\} and Yu, \{X. H.\} and Zeng, \{Q. B.\} and D. Seweryniak and B. Andel and S. Antalic and Barzakh, \{A. E.\} and M. Block and A. Bronis and Carpenter, \{M. P.\} and P. Copp and Cubiss, \{J. G.\} and Doherty, \{D. T.\} and \{Van Duppen\}, P. and Z. Favier and F. Giacoppo and B. Kindler and Kondev, \{F. G.\} and T. Lauritsen and B. Lommel and \{Al Monthery\}, M. and P. Mosat and C. Raison and W. Reviol and G. Savard and S. Stolze and Wilson, \{G. L.\} and B. Ding and S. Guo and Guo, \{C. Y.\} and Yu, \{Y. B.\} and Wu, \{Y. F.\}",

note = "Publisher Copyright: {\textcopyright}2025 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.",

year = "2025",

month = aug,

day = "1",

doi = "10.1088/1674-1137/add70c",

language = "英语",

volume = "49",

journal = "Chinese Physics C",

issn = "1674-1137",

publisher = "IOP Publishing Ltd.",

number = "8",

}

Fu, XY, Liu, Z, Andreyev, AN, Jiao, CF, Dong, RY, Zhang, WQ, Huang, H, Sun, W, Chen, QB, Zhang, SQ, Li, JG, Zhou, XH, Yu, XH, Zeng, QB, Seweryniak, D, Andel, B, Antalic, S, Barzakh, AE, Block, M, Bronis, A, Carpenter, MP, Copp, P, Cubiss, JG, Doherty, DT, Van Duppen, P, Favier, Z, Giacoppo, F, Kindler, B, Kondev, FG, Lauritsen, T, Lommel, B, Al Monthery, M, Mosat, P, Raison, C, Reviol, W, Savard, G, Stolze, S, Wilson, GL, Ding, B, Guo, S, Guo, CY, Yu, YB & Wu, YF 2025, 'Observation of a new isomer in ¹⁸⁵Au', Chinese Physics C, vol. 49, no. 8, 084004. https://doi.org/10.1088/1674-1137/add70c

TY - JOUR

T1 - Observation of a new isomer in 185Au

AU - Fu, X. Y.

AU - Liu, Z.

AU - Andreyev, A. N.

AU - Jiao, C. F.

AU - Dong, R. Y.

AU - Zhang, W. Q.

AU - Huang, H.

AU - Sun, W.

AU - Chen, Q. B.

AU - Zhang, S. Q.

AU - Li, J. G.

AU - Zhou, X. H.

AU - Yu, X. H.

AU - Zeng, Q. B.

AU - Seweryniak, D.

AU - Andel, B.

AU - Antalic, S.

AU - Barzakh, A. E.

AU - Block, M.

AU - Bronis, A.

AU - Carpenter, M. P.

AU - Copp, P.

AU - Cubiss, J. G.

AU - Doherty, D. T.

AU - Van Duppen, P.

AU - Favier, Z.

AU - Giacoppo, F.

AU - Kindler, B.

AU - Kondev, F. G.

AU - Lauritsen, T.

AU - Lommel, B.

AU - Al Monthery, M.

AU - Mosat, P.

AU - Raison, C.

AU - Reviol, W.

AU - Savard, G.

AU - Stolze, S.

AU - Wilson, G. L.

AU - Ding, B.

AU - Guo, S.

AU - Guo, C. Y.

AU - Yu, Y. B.

AU - Wu, Y. F.

N1 - Publisher Copyright: ©2025 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

PY - 2025/8/1

Y1 - 2025/8/1

N2 - Delayed γ-ray spectroscopy of 185Au was studied at the Argonne Gas-Filled Analyzer. A new isomer at an excitation energy of 1504.2(4) keV with a half-life of 630(80) ns was identified via γ-γ coincidence analysis, decaying via a 294.8(3) keV transition. Based on Weisskopf estimates, the multipolarity of the 295 keV transition is assigned to be E1, M1, E2, or M2. Possible configurations for this new isomer are discussed based on configuration-constrained potential energy surface calculations.

AB - Delayed γ-ray spectroscopy of 185Au was studied at the Argonne Gas-Filled Analyzer. A new isomer at an excitation energy of 1504.2(4) keV with a half-life of 630(80) ns was identified via γ-γ coincidence analysis, decaying via a 294.8(3) keV transition. Based on Weisskopf estimates, the multipolarity of the 295 keV transition is assigned to be E1, M1, E2, or M2. Possible configurations for this new isomer are discussed based on configuration-constrained potential energy surface calculations.

KW - isomer

KW - mid-shell

KW - PES calculation

KW - shape deformation

KW - three-quasiparticle state

UR - https://www.scopus.com/pages/publications/105016544455

U2 - 10.1088/1674-1137/add70c

DO - 10.1088/1674-1137/add70c

M3 - 文章

AN - SCOPUS:105016544455

SN - 1674-1137

VL - 49

JO - Chinese Physics C

JF - Chinese Physics C

IS - 8

M1 - 084004

ER -

Observation of a new isomer in ¹⁸⁵Au

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Keywords

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