Evidence for spherical-oblate shape coexistence in Tc 87

X. Liu; B. Cederwall; C. Qi; R. A. Wyss; null Aktas; A. Ertoprak; W. Zhang; E. Clément; G. De France; D. Ralet; A. Gadea; A. Goasduff; G. Jaworski; I. Kuti; B. M. Nyakó; J. Nyberg; M. Palacz; R. Wadsworth; J. J. Valiente-Dobón; H. Al-Azri; A. Ataç Nyberg; T. Bäck; G. De Angelis; M. Doncel; J. Dudouet; A. Gottardo; M. Jurado; J. Ljungvall; D. Mengoni; D. R. Napoli; C. M. Petrache; D. Sohler; J. Timár; D. Barrientos; P. Bednarczyk; G. Benzoni; B. Birkenbach; A. J. Boston; H. C. Boston; I. Burrows; L. Charles; M. Ciemala; F. C.L. Crespi; D. M. Cullen; P. Désesquelles; C. Domingo-Pardo; J. Eberth; N. Erduran; S. Ertürk; J. Simpson

doi:10.1103/PhysRevC.106.034304

Evidence for spherical-oblate shape coexistence in Tc 87

X. Liu, B. Cederwall, C. Qi, R. A. Wyss, Aktas, A. Ertoprak, W. Zhang, E. Clément, G. De France, D. Ralet, A. Gadea, A. Goasduff, G. Jaworski, I. Kuti, B. M. Nyakó, J. Nyberg, M. Palacz, R. Wadsworth, J. J. Valiente-Dobón, H. Al-AzriA. Ataç Nyberg, T. Bäck, G. De Angelis, M. Doncel, J. Dudouet, A. Gottardo, M. Jurado, J. Ljungvall, D. Mengoni, D. R. Napoli, C. M. Petrache, D. Sohler, J. Timár, D. Barrientos, P. Bednarczyk, G. Benzoni, B. Birkenbach, A. J. Boston, H. C. Boston, I. Burrows, L. Charles, M. Ciemala, F. C.L. Crespi, D. M. Cullen, P. Désesquelles, C. Domingo-Pardo, J. Eberth, N. Erduran, S. Ertürk, J. Simpson

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

Abstract

Excited states in the neutron-deficient nucleus Tc87 have been studied via the fusion-evaporation reaction Fe54(Ar36,2n1p)Tc87 at 115 MeV beam energy. The AGATA γ-ray spectrometer coupled to the DIAMANT, NEDA, and Neutron Wall detector arrays for light-particle detection was used to measure the prompt coincidence of γ rays and light particles. Six transitions from the deexcitation of excited states belonging to a new band in Tc87 were identified by comparing γ-ray intensities in the spectra gated under different reaction channel selection conditions. The constructed level structure was compared with the shell model and total Routhian surface calculations. The results indicate that the new band structure in Tc87 is built on a spherical configuration, which is different from that assigned to the previously identified oblate yrast rotational band.

Original language	English
Article number	034304
Number of pages	6
Journal	Physical Review C
Volume	106
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.106.034304
Publication status	Published - 9 Sept 2022

Bibliographical note

© 2022 authors.
Funding Information:
This work was supported by the Swedish Research Council under Grants No. 621-2014-5558 and No. 2019-04880; the EU 7th Framework Programme, Integrating Activities Transnational Access, Project No. 262010 ENSAR; the UK STFC under Grants No. ST/L005727/1 and No. ST/P003885/1; the Polish National Science Centre, Grants No. 2016/22/M/ST2/00269 and No. 2017/25/B/ST2/01569; COPIN-INFN, COPIN-IN2P3, and COPIGAL projects; the National Research, Development and Innovation Fund of Hungary (Project No. K128947); the European Regional Development Fund (Contract No. GINOP-2.3.3-15-2016-00034); the Hungarian National Research, Development and Innovation Office, NKFIH, Contract No. PD124717; the Ministerio de Ciencia e Innovación and Generalitat Valenciana, Spain, under the Grants No. SEV-2014-0398 and No. FPA2017-84756-C4; PROMETEO/2019/005; and by the EU FEDER funds. X.L. gratefully acknowledges support from the China Scholarship Council, Grant No. 201700260183, for his stay in Sweden. We acknowledge the support from the AGATA Collaboration and thank the GANIL staff for excellent technical support and operation.

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Evidence for spherical-oblate shape coexistence in 87Tc
© 2022 authors.
Final published version, 2.56 MBLicence: CC BY

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Liu, X., Cederwall, B., Qi, C., Wyss, R. A., Aktas, Ertoprak, A., Zhang, W., Clément, E., De France, G., Ralet, D., Gadea, A., Goasduff, A., Jaworski, G., Kuti, I., Nyakó, B. M., Nyberg, J., Palacz, M., Wadsworth, R., Valiente-Dobón, J. J., ... Simpson, J. (2022). Evidence for spherical-oblate shape coexistence in Tc 87. Physical Review C, 106(3), Article 034304. https://doi.org/10.1103/PhysRevC.106.034304

@article{767c184a569246afac94bbdcf6db54c1,

title = "Evidence for spherical-oblate shape coexistence in Tc 87",

abstract = "Excited states in the neutron-deficient nucleus Tc87 have been studied via the fusion-evaporation reaction Fe54(Ar36,2n1p)Tc87 at 115 MeV beam energy. The AGATA γ-ray spectrometer coupled to the DIAMANT, NEDA, and Neutron Wall detector arrays for light-particle detection was used to measure the prompt coincidence of γ rays and light particles. Six transitions from the deexcitation of excited states belonging to a new band in Tc87 were identified by comparing γ-ray intensities in the spectra gated under different reaction channel selection conditions. The constructed level structure was compared with the shell model and total Routhian surface calculations. The results indicate that the new band structure in Tc87 is built on a spherical configuration, which is different from that assigned to the previously identified oblate yrast rotational band.",

author = "X. Liu and B. Cederwall and C. Qi and Wyss, {R. A.} and Aktas and A. Ertoprak and W. Zhang and E. Cl{\'e}ment and {De France}, G. and D. Ralet and A. Gadea and A. Goasduff and G. Jaworski and I. Kuti and Nyak{\'o}, {B. M.} and J. Nyberg and M. Palacz and R. Wadsworth and Valiente-Dob{\'o}n, {J. J.} and H. Al-Azri and {Ata{\c c} Nyberg}, A. and T. B{\"a}ck and {De Angelis}, G. and M. Doncel and J. Dudouet and A. Gottardo and M. Jurado and J. Ljungvall and D. Mengoni and Napoli, {D. R.} and Petrache, {C. M.} and D. Sohler and J. Tim{\'a}r and D. Barrientos and P. Bednarczyk and G. Benzoni and B. Birkenbach and Boston, {A. J.} and Boston, {H. C.} and I. Burrows and L. Charles and M. Ciemala and Crespi, {F. C.L.} and Cullen, {D. M.} and P. D{\'e}sesquelles and C. Domingo-Pardo and J. Eberth and N. Erduran and S. Ert{\"u}rk and J. Simpson",

note = "{\textcopyright} 2022 authors. Funding Information: This work was supported by the Swedish Research Council under Grants No. 621-2014-5558 and No. 2019-04880; the EU 7th Framework Programme, Integrating Activities Transnational Access, Project No. 262010 ENSAR; the UK STFC under Grants No. ST/L005727/1 and No. ST/P003885/1; the Polish National Science Centre, Grants No. 2016/22/M/ST2/00269 and No. 2017/25/B/ST2/01569; COPIN-INFN, COPIN-IN2P3, and COPIGAL projects; the National Research, Development and Innovation Fund of Hungary (Project No. K128947); the European Regional Development Fund (Contract No. GINOP-2.3.3-15-2016-00034); the Hungarian National Research, Development and Innovation Office, NKFIH, Contract No. PD124717; the Ministerio de Ciencia e Innovaci{\'o}n and Generalitat Valenciana, Spain, under the Grants No. SEV-2014-0398 and No. FPA2017-84756-C4; PROMETEO/2019/005; and by the EU FEDER funds. X.L. gratefully acknowledges support from the China Scholarship Council, Grant No. 201700260183, for his stay in Sweden. We acknowledge the support from the AGATA Collaboration and thank the GANIL staff for excellent technical support and operation. ",

year = "2022",

month = sep,

day = "9",

doi = "10.1103/PhysRevC.106.034304",

language = "English",

volume = "106",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

Liu, X, Cederwall, B, Qi, C, Wyss, RA, Aktas, Ertoprak, A, Zhang, W, Clément, E, De France, G, Ralet, D, Gadea, A, Goasduff, A, Jaworski, G, Kuti, I, Nyakó, BM, Nyberg, J, Palacz, M, Wadsworth, R, Valiente-Dobón, JJ, Al-Azri, H, Ataç Nyberg, A, Bäck, T, De Angelis, G, Doncel, M, Dudouet, J, Gottardo, A, Jurado, M, Ljungvall, J, Mengoni, D, Napoli, DR, Petrache, CM, Sohler, D, Timár, J, Barrientos, D, Bednarczyk, P, Benzoni, G, Birkenbach, B, Boston, AJ, Boston, HC, Burrows, I, Charles, L, Ciemala, M, Crespi, FCL, Cullen, DM, Désesquelles, P, Domingo-Pardo, C, Eberth, J, Erduran, N, Ertürk, S & Simpson, J 2022, 'Evidence for spherical-oblate shape coexistence in Tc 87', Physical Review C, vol. 106, no. 3, 034304. https://doi.org/10.1103/PhysRevC.106.034304

TY - JOUR

T1 - Evidence for spherical-oblate shape coexistence in Tc 87

AU - Liu, X.

AU - Cederwall, B.

AU - Qi, C.

AU - Wyss, R. A.

AU - Aktas, null

AU - Ertoprak, A.

AU - Zhang, W.

AU - Clément, E.

AU - De France, G.

AU - Ralet, D.

AU - Gadea, A.

AU - Goasduff, A.

AU - Jaworski, G.

AU - Kuti, I.

AU - Nyakó, B. M.

AU - Nyberg, J.

AU - Palacz, M.

AU - Wadsworth, R.

AU - Valiente-Dobón, J. J.

AU - Al-Azri, H.

AU - Ataç Nyberg, A.

AU - Bäck, T.

AU - De Angelis, G.

AU - Doncel, M.

AU - Dudouet, J.

AU - Gottardo, A.

AU - Jurado, M.

AU - Ljungvall, J.

AU - Mengoni, D.

AU - Napoli, D. R.

AU - Petrache, C. M.

AU - Sohler, D.

AU - Timár, J.

AU - Barrientos, D.

AU - Bednarczyk, P.

AU - Benzoni, G.

AU - Birkenbach, B.

AU - Boston, A. J.

AU - Boston, H. C.

AU - Burrows, I.

AU - Charles, L.

AU - Ciemala, M.

AU - Crespi, F. C.L.

AU - Cullen, D. M.

AU - Désesquelles, P.

AU - Domingo-Pardo, C.

AU - Eberth, J.

AU - Erduran, N.

AU - Ertürk, S.

AU - Simpson, J.

N1 - © 2022 authors. Funding Information: This work was supported by the Swedish Research Council under Grants No. 621-2014-5558 and No. 2019-04880; the EU 7th Framework Programme, Integrating Activities Transnational Access, Project No. 262010 ENSAR; the UK STFC under Grants No. ST/L005727/1 and No. ST/P003885/1; the Polish National Science Centre, Grants No. 2016/22/M/ST2/00269 and No. 2017/25/B/ST2/01569; COPIN-INFN, COPIN-IN2P3, and COPIGAL projects; the National Research, Development and Innovation Fund of Hungary (Project No. K128947); the European Regional Development Fund (Contract No. GINOP-2.3.3-15-2016-00034); the Hungarian National Research, Development and Innovation Office, NKFIH, Contract No. PD124717; the Ministerio de Ciencia e Innovación and Generalitat Valenciana, Spain, under the Grants No. SEV-2014-0398 and No. FPA2017-84756-C4; PROMETEO/2019/005; and by the EU FEDER funds. X.L. gratefully acknowledges support from the China Scholarship Council, Grant No. 201700260183, for his stay in Sweden. We acknowledge the support from the AGATA Collaboration and thank the GANIL staff for excellent technical support and operation.

PY - 2022/9/9

Y1 - 2022/9/9

N2 - Excited states in the neutron-deficient nucleus Tc87 have been studied via the fusion-evaporation reaction Fe54(Ar36,2n1p)Tc87 at 115 MeV beam energy. The AGATA γ-ray spectrometer coupled to the DIAMANT, NEDA, and Neutron Wall detector arrays for light-particle detection was used to measure the prompt coincidence of γ rays and light particles. Six transitions from the deexcitation of excited states belonging to a new band in Tc87 were identified by comparing γ-ray intensities in the spectra gated under different reaction channel selection conditions. The constructed level structure was compared with the shell model and total Routhian surface calculations. The results indicate that the new band structure in Tc87 is built on a spherical configuration, which is different from that assigned to the previously identified oblate yrast rotational band.

AB - Excited states in the neutron-deficient nucleus Tc87 have been studied via the fusion-evaporation reaction Fe54(Ar36,2n1p)Tc87 at 115 MeV beam energy. The AGATA γ-ray spectrometer coupled to the DIAMANT, NEDA, and Neutron Wall detector arrays for light-particle detection was used to measure the prompt coincidence of γ rays and light particles. Six transitions from the deexcitation of excited states belonging to a new band in Tc87 were identified by comparing γ-ray intensities in the spectra gated under different reaction channel selection conditions. The constructed level structure was compared with the shell model and total Routhian surface calculations. The results indicate that the new band structure in Tc87 is built on a spherical configuration, which is different from that assigned to the previously identified oblate yrast rotational band.

UR - http://www.scopus.com/inward/record.url?scp=85140633028&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.106.034304

DO - 10.1103/PhysRevC.106.034304

M3 - Article

AN - SCOPUS:85140633028

SN - 2469-9985

VL - 106

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 034304

ER -

Evidence for spherical-oblate shape coexistence in Tc 87

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Bibliographical note

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Nuclear Physics Consolidated Grant

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Evidence for spherical-oblate shape coexistence in Tc 87

Abstract

Bibliographical note

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Nuclear Physics Consolidated Grant 2021-2024

Nuclear Physics Consolidated Grant

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