Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc

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; V. González; J. Goupil; H. Hess; T. Huyuk; A. Jungclaus; W. Korten; A. Lemasson; S. Leoni; A. Maj; R. Menegazzo; B. Million; R. M. Perez-Vidal; Zs Podolyàk; A. Pullia; F. Recchia; P. Reiter; F. Saillant; M. D. Salsac; E. Sanchis; J. Simpson; O. Stezowski; C. Theisen; M. Zielińska

doi:10.1103/PhysRevC.104.L021302

Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc

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, V. González, J. Goupil, H. Hess, T. Huyuk, A. Jungclaus, W. Korten, A. Lemasson, S. Leoni, A. Maj, R. Menegazzo, B. Million, R. M. Perez-Vidal, Zs Podolyàk, A. Pullia, F. Recchia, P. Reiter, F. Saillant, M. D. Salsac, E. Sanchis, J. Simpson, O. Stezowski, C. Theisen, M. Zielińska

^*Corresponding author for this work

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

Abstract

The low-lying excited states in the neutron-deficient N=Z+1 nucleus Tc444387 have been studied via the fusion-evaporation reaction Fe54(Ar36, 2n1p)Tc87 at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of Tc87 from the (9/2g.s.+) state to the (33/21+) state was established based on six mutually coincident γ-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at ω≈0.50 MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around N=44 is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the N=Z line.

Original language	English
Article number	L021302
Journal	Physical Review C
Volume	104
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.104.L021302
Publication status	Published - 20 Aug 2021

Bibliographical note

© 2021, The Author(s).

Funding Information:
Acknowledgments. 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. 2017/25/B/ST2/01569, No. COPIN-INFN, No. COPIN-IN2P3, and No. 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, Spanish, under Grants No. SEV-2014-0398, No. FPA2017-84756-C4, and No. 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 thank the GANIL staff for excellent technical support and operation.

Publisher Copyright:
© 2021 authors.

Access to Document

10.1103/PhysRevC.104.L021302Licence: CC BY

PhysRevC.104.L021302
© 2021, The Author(s).
Final published version, 489 KBLicence: CC BY

Cite this

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., ... Zielińska, M. (2021). Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc. Physical Review C, 104(2), Article L021302. https://doi.org/10.1103/PhysRevC.104.L021302

@article{224512db87644724b8c2d8c136b45d43,

title = "Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc",

abstract = "The low-lying excited states in the neutron-deficient N=Z+1 nucleus Tc444387 have been studied via the fusion-evaporation reaction Fe54(Ar36, 2n1p)Tc87 at the Grand Acc{\'e}l{\'e}rateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of Tc87 from the (9/2g.s.+) state to the (33/21+) state was established based on six mutually coincident γ-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at ω≈0.50 MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around N=44 is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the N=Z line.",

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 V. Gonz{\'a}lez and J. Goupil and H. Hess and T. Huyuk and A. Jungclaus and W. Korten and A. Lemasson and S. Leoni and A. Maj and R. Menegazzo and B. Million and Perez-Vidal, {R. M.} and Zs Podoly{\`a}k and A. Pullia and F. Recchia and P. Reiter and F. Saillant and Salsac, {M. D.} and E. Sanchis and J. Simpson and O. Stezowski and C. Theisen and M. Zieli{\'n}ska",

note = "{\textcopyright} 2021, The Author(s). Funding Information: Acknowledgments. 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. 2017/25/B/ST2/01569, No. COPIN-INFN, No. COPIN-IN2P3, and No. 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, Spanish, under Grants No. SEV-2014-0398, No. FPA2017-84756-C4, and No. 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 thank the GANIL staff for excellent technical support and operation. Publisher Copyright: {\textcopyright} 2021 authors.",

year = "2021",

month = aug,

day = "20",

doi = "10.1103/PhysRevC.104.L021302",

language = "English",

volume = "104",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

}

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, González, V, Goupil, J, Hess, H, Huyuk, T, Jungclaus, A, Korten, W, Lemasson, A, Leoni, S, Maj, A, Menegazzo, R, Million, B, Perez-Vidal, RM, Podolyàk, Z, Pullia, A, Recchia, F, Reiter, P, Saillant, F, Salsac, MD, Sanchis, E, Simpson, J, Stezowski, O, Theisen, C & Zielińska, M 2021, 'Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc', Physical Review C, vol. 104, no. 2, L021302. https://doi.org/10.1103/PhysRevC.104.L021302

TY - JOUR

T1 - Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc

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 - González, V.

AU - Goupil, J.

AU - Hess, H.

AU - Huyuk, T.

AU - Jungclaus, A.

AU - Korten, W.

AU - Lemasson, A.

AU - Leoni, S.

AU - Maj, A.

AU - Menegazzo, R.

AU - Million, B.

AU - Perez-Vidal, R. M.

AU - Podolyàk, Zs

AU - Pullia, A.

AU - Recchia, F.

AU - Reiter, P.

AU - Saillant, F.

AU - Salsac, M. D.

AU - Sanchis, E.

AU - Simpson, J.

AU - Stezowski, O.

AU - Theisen, C.

AU - Zielińska, M.

N1 - © 2021, The Author(s). Funding Information: Acknowledgments. 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. 2017/25/B/ST2/01569, No. COPIN-INFN, No. COPIN-IN2P3, and No. 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, Spanish, under Grants No. SEV-2014-0398, No. FPA2017-84756-C4, and No. 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 thank the GANIL staff for excellent technical support and operation. Publisher Copyright: © 2021 authors.

PY - 2021/8/20

Y1 - 2021/8/20

N2 - The low-lying excited states in the neutron-deficient N=Z+1 nucleus Tc444387 have been studied via the fusion-evaporation reaction Fe54(Ar36, 2n1p)Tc87 at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of Tc87 from the (9/2g.s.+) state to the (33/21+) state was established based on six mutually coincident γ-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at ω≈0.50 MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around N=44 is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the N=Z line.

AB - The low-lying excited states in the neutron-deficient N=Z+1 nucleus Tc444387 have been studied via the fusion-evaporation reaction Fe54(Ar36, 2n1p)Tc87 at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt γ rays, neutrons, and charged particles emitted in the reaction. A level scheme of Tc87 from the (9/2g.s.+) state to the (33/21+) state was established based on six mutually coincident γ-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at ω≈0.50 MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around N=44 is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the N=Z line.

UR - http://www.scopus.com/inward/record.url?scp=85114187751&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.104.L021302

DO - 10.1103/PhysRevC.104.L021302

M3 - Article

AN - SCOPUS:85114187751

SN - 2469-9985

VL - 104

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - L021302

ER -

Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc

Abstract

Bibliographical note

Access to Document

Other files and links

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Evidence for enhanced neutron-proton correlations from the level structure of the N=Z+1 nucleus 87Tc

Abstract

Bibliographical note

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this