Spectroscopy of 187Tl: shape coexistence

C. Y. Guo; W. Q. Zhang; H. Huang; S. Q. Zhang; Z. H. Li; Z. Liu; H. Hua; D. W. Luo; H. Y. Wu; A. N. Andreyev; 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; X. Q. Li; B. Lommel; M. Al Monthery; P. Mošať; L. Ni; C. Raison; W. Reviol; G. Savard; S. Stolze; G. L. Wilson; C. Xu; J. Z. Zhang; S. Y. Zhang; Z. X. Zhou

doi:10.1140/epja/s10050-024-01395-3

Spectroscopy of ¹⁸⁷Tl: shape coexistence

C. Y. Guo, W. Q. Zhang, H. Huang, S. Q. Zhang, Z. H. Li, Z. Liu, H. Hua, D. W. Luo, H. Y. Wu, A. N. Andreyev, D. Seweryniak, B. Andel, S. Antalic, A. E. Barzakh, M. Block, A. Bronis, M. P. Carpenter, P. Copp, J. G. Cubiss, D. T. DohertyP. Van Duppen, Z. Favier, F. Giacoppo, B. Kindler, F. G. Kondev, T. Lauritsen, X. Q. Li, B. Lommel, M. Al Monthery, P. Mošať, L. Ni, C. Raison, W. Reviol, G. Savard, S. Stolze, G. L. Wilson, C. Xu, J. Z. Zhang, S. Y. Zhang, Z. X. Zhou

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Abstract

The prompt and delayed $$\gamma $$-ray spectra of 187Tl was studied via the 142Nd(50Cr, 3p2n)187Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of 187Tl was established. The collective bands with one-quasiparticle configurations from the $$2f_{7/2}$$, $$1h_{9/2}$$, $$1h_{11/2}$$and $$1i_{13/2}$$orbitals and high-lying structures with possible three-quasiparticle configurations are investigated in terms of the tilted axis cranking covariant density functional theory. At low excitation energy, the rotational bands with one-quasiparticle configurations reflect coexistence of three shapes: prolate, triaxial, and oblate. The possible shapes of two microsecond isomers at high excitation energy are proposed.

Original language	English
Article number	165
Number of pages	10
Journal	European Physical Journal A : Hadrons and Nuclei
Volume	60
Issue number	8
DOIs	https://doi.org/10.1140/epja/s10050-024-01395-3
Publication status	Published - 24 Aug 2024

Bibliographical note

© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. This is an author-produced version of the published paper. Uploaded in accordance with the University’s Research Publications and Open Access policy.

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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. This is an author-produced version of the published paper. Uploaded in accordance with the University’s Research Publications and Open Access policy.
Accepted author manuscript, 706 KBLicence: CC BY

Cite this

Guo, C. Y., Zhang, W. Q., Huang, H., Zhang, S. Q., Li, Z. H., Liu, Z., Hua, H., Luo, D. W., Wu, H. Y., Andreyev, A. N., Seweryniak, D., Andel, B., Antalic, S., Barzakh, A. E., Block, M., Bronis, A., Carpenter, M. P., Copp, P., Cubiss, J. G., ... Zhou, Z. X. (2024). Spectroscopy of ¹⁸⁷Tl: shape coexistence. European Physical Journal A : Hadrons and Nuclei, 60(8), Article 165. https://doi.org/10.1140/epja/s10050-024-01395-3

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abstract = "The prompt and delayed $$\gamma $$-ray spectra of 187Tl was studied via the 142Nd(50Cr, 3p2n)187Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of 187Tl was established. The collective bands with one-quasiparticle configurations from the $$2f_{7/2}$$, $$1h_{9/2}$$, $$1h_{11/2}$$and $$1i_{13/2}$$orbitals and high-lying structures with possible three-quasiparticle configurations are investigated in terms of the tilted axis cranking covariant density functional theory. At low excitation energy, the rotational bands with one-quasiparticle configurations reflect coexistence of three shapes: prolate, triaxial, and oblate. The possible shapes of two microsecond isomers at high excitation energy are proposed.",

author = "Guo, {C. Y.} and Zhang, {W. Q.} and H. Huang and Zhang, {S. Q.} and Li, {Z. H.} and Z. Liu and H. Hua and Luo, {D. W.} and Wu, {H. Y.} and Andreyev, {A. N.} 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 Li, {X. Q.} and B. Lommel and {Al Monthery}, M. and P. Mo{\v s}a{\v t} and L. Ni and C. Raison and W. Reviol and G. Savard and S. Stolze and Wilson, {G. L.} and C. Xu and Zhang, {J. Z.} and Zhang, {S. Y.} and Zhou, {Z. X.}",

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Guo, CY, Zhang, WQ, Huang, H, Zhang, SQ, Li, ZH, Liu, Z, Hua, H, Luo, DW, Wu, HY, Andreyev, AN, 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, Li, XQ, Lommel, B, Al Monthery, M, Mošať, P, Ni, L, Raison, C, Reviol, W, Savard, G, Stolze, S, Wilson, GL, Xu, C, Zhang, JZ, Zhang, SY & Zhou, ZX 2024, 'Spectroscopy of ¹⁸⁷Tl: shape coexistence', European Physical Journal A : Hadrons and Nuclei, vol. 60, no. 8, 165. https://doi.org/10.1140/epja/s10050-024-01395-3

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AU - Guo, C. Y.

AU - Zhang, W. Q.

AU - Huang, H.

AU - Zhang, S. Q.

AU - Li, Z. H.

AU - Liu, Z.

AU - Hua, H.

AU - Luo, D. W.

AU - Wu, H. Y.

AU - Andreyev, A. N.

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 - Li, X. Q.

AU - Lommel, B.

AU - Al Monthery, M.

AU - Mošať, P.

AU - Ni, L.

AU - Raison, C.

AU - Reviol, W.

AU - Savard, G.

AU - Stolze, S.

AU - Wilson, G. L.

AU - Xu, C.

AU - Zhang, J. Z.

AU - Zhang, S. Y.

AU - Zhou, Z. X.

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Y1 - 2024/8/24

N2 - The prompt and delayed $$\gamma $$-ray spectra of 187Tl was studied via the 142Nd(50Cr, 3p2n)187Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of 187Tl was established. The collective bands with one-quasiparticle configurations from the $$2f_{7/2}$$, $$1h_{9/2}$$, $$1h_{11/2}$$and $$1i_{13/2}$$orbitals and high-lying structures with possible three-quasiparticle configurations are investigated in terms of the tilted axis cranking covariant density functional theory. At low excitation energy, the rotational bands with one-quasiparticle configurations reflect coexistence of three shapes: prolate, triaxial, and oblate. The possible shapes of two microsecond isomers at high excitation energy are proposed.

AB - The prompt and delayed $$\gamma $$-ray spectra of 187Tl was studied via the 142Nd(50Cr, 3p2n)187Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of 187Tl was established. The collective bands with one-quasiparticle configurations from the $$2f_{7/2}$$, $$1h_{9/2}$$, $$1h_{11/2}$$and $$1i_{13/2}$$orbitals and high-lying structures with possible three-quasiparticle configurations are investigated in terms of the tilted axis cranking covariant density functional theory. At low excitation energy, the rotational bands with one-quasiparticle configurations reflect coexistence of three shapes: prolate, triaxial, and oblate. The possible shapes of two microsecond isomers at high excitation energy are proposed.

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DO - 10.1140/epja/s10050-024-01395-3

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VL - 60

JO - European Physical Journal A : Hadrons and Nuclei

JF - European Physical Journal A : Hadrons and Nuclei

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ER -

Spectroscopy of ¹⁸⁷Tl: shape coexistence

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Nuclear Physics Consolidated Grant 2021-2024

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Spectroscopy of 187Tl: shape coexistence

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Bibliographical note

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Nuclear Physics Consolidated Grant 2021-2024

Cite this

Spectroscopy of ¹⁸⁷Tl: shape coexistence