Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg

K. Wrzosek-Lipska; K. Rezynkina; N. Bree; M. Zielinska; L.P. Gaffney; A. Petts; A. Andreyev; B. Bastin; M. Bender; A. Blazhev; B. Bruyneel; P.A. Butler; M.P. Carpenter; J. Cederkall; E. Clement; T.E. Cocolios; A.N. Deacon; J. Diriken; A. Ekstrom; C. Fitzpatrick; L.M. Fraile; Ch. Fransen; S.J. Freeman; J.E. Garcia-Ramos; K. Geibel; R. Gernhauser; T. Grahn; M. Guttormsen; B. Hadinia; K. Hadynska-Klek; M. Hass; P.-H. Heenen; R.-D. Herzberg; H. Hess; K. Heyde; M. Huyse; O. Ivanov; D.G. Jenkins; R. Julin; N. Kesteloot; Th. Kroell; R. Kruecken; A.C. Larsen; R. Lutter; P. Marley; P.J. Napiorkowski; R. Orlandi; R.D. Page; J. Pakarinen; N. Patronis; P.J. Peura; E. Piselli; L. Prochniak; P. Rahkila; E. Rapisarda; P. Reiter; A.P. Robinson; M. Scheck; S. Siem; K. Singh Chakkal; J.F. Smith; J. Srebrny; I. Stefanescu; G.M. Tveten; P. Van Duppen; J. Van de Walle; D. Voulot; N. Warr; A. Wiens; J.L. Wood

doi:10.1140/epja/i2019-12815-2

Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of ¹⁸²Hg, ¹⁸⁴Hg, ¹⁸⁶Hg and ¹⁸⁸Hg

K. Wrzosek-Lipska^*, K. Rezynkina, N. Bree, M. Zielinska, L.P. Gaffney, A. Petts, A. Andreyev, B. Bastin, M. Bender, A. Blazhev, B. Bruyneel, P.A. Butler, M.P. Carpenter, J. Cederkall, E. Clement, T.E. Cocolios, A.N. Deacon, J. Diriken, A. Ekstrom, C. FitzpatrickL.M. Fraile, Ch. Fransen, S.J. Freeman, J.E. Garcia-Ramos, K. Geibel, R. Gernhauser, T. Grahn, M. Guttormsen, B. Hadinia, K. Hadynska-Klek, M. Hass, P.-H. Heenen, R.-D. Herzberg, H. Hess, K. Heyde, M. Huyse, O. Ivanov, D.G. Jenkins, R. Julin, N. Kesteloot, Th. Kroell, R. Kruecken, A.C. Larsen, R. Lutter, P. Marley, P.J. Napiorkowski, R. Orlandi, R.D. Page, J. Pakarinen, N. Patronis, P.J. Peura, E. Piselli, L. Prochniak, P. Rahkila, E. Rapisarda, P. Reiter, A.P. Robinson, M. Scheck, S. Siem, K. Singh Chakkal, J.F. Smith, J. Srebrny, I. Stefanescu, G.M. Tveten, P. Van Duppen, J. Van de Walle, D. Voulot, N. Warr, A. Wiens, J.L. Wood

^*Corresponding author for this work

School of Computing, Engineering and Physical Sciences

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

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Abstract

The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass ^182-188Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. The population of 0⁺_1,2 , 2⁺_1,2 and 4⁺₁ states was observed in all nuclei under study. Reduced E2 matrix elements coupling populated yrast and non-yrast states were extracted, including their relative signs. These are a sensitive probe of shape coexistence and may be used to validate nuclear models. The experimental results are discussed in terms of mixing of two different configurations and are compared with three different model calculations: the Beyond Mean Field model, the Interacting Boson Model with configuration mixing and the General Bohr Hamiltonian. Partial agreement with experiment was observed, hinting to missing ingredients in the theoretical descriptions.

Original language	English
Article number	130
Number of pages	23
Journal	The European Physical Journal A
Volume	55
Issue number	8
DOIs	https://doi.org/10.1140/epja/i2019-12815-2
Publication status	Published - 22 Aug 2019

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2019 06 28 Wrzosek-Lipska et al Electromagnetic finalFinal published version, 813 KBLicence: CC BY

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Wrzosek-Lipska, K., Rezynkina, K., Bree, N., Zielinska, M., Gaffney, L. P., Petts, A., Andreyev, A., Bastin, B., Bender, M., Blazhev, A., Bruyneel, B., Butler, P. A., Carpenter, M. P., Cederkall, J., Clement, E., Cocolios, T. E., Deacon, A. N., Diriken, J., Ekstrom, A., ... Wood, J. L. (2019). Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of ¹⁸²Hg, ¹⁸⁴Hg, ¹⁸⁶Hg and ¹⁸⁸Hg. The European Physical Journal A, 55(8), Article 130. https://doi.org/10.1140/epja/i2019-12815-2

@article{d8d79bc2d64d4eb3bbbf9dae4960573f,

title = "Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg",

abstract = "The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass 182-188Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. The population of 0+1,2 , 2+1,2 and 4+1 states was observed in all nuclei under study. Reduced E2 matrix elements coupling populated yrast and non-yrast states were extracted, including their relative signs. These are a sensitive probe of shape coexistence and may be used to validate nuclear models. The experimental results are discussed in terms of mixing of two different configurations and are compared with three different model calculations: the Beyond Mean Field model, the Interacting Boson Model with configuration mixing and the General Bohr Hamiltonian. Partial agreement with experiment was observed, hinting to missing ingredients in the theoretical descriptions.",

author = "K. Wrzosek-Lipska and K. Rezynkina and N. Bree and M. Zielinska and L.P. Gaffney and A. Petts and A. Andreyev and B. Bastin and M. Bender and A. Blazhev and B. Bruyneel and P.A. Butler and M.P. Carpenter and J. Cederkall and E. Clement and T.E. Cocolios and A.N. Deacon and J. Diriken and A. Ekstrom and C. Fitzpatrick and L.M. Fraile and Ch. Fransen and S.J. Freeman and J.E. Garcia-Ramos and K. Geibel and R. Gernhauser and T. Grahn and M. Guttormsen and B. Hadinia and K. Hadynska-Klek and M. Hass and P.-H. Heenen and R.-D. Herzberg and H. Hess and K. Heyde and M. Huyse and O. Ivanov and D.G. Jenkins and R. Julin and N. Kesteloot and Th. Kroell and R. Kruecken and A.C. Larsen and R. Lutter and P. Marley and P.J. Napiorkowski and R. Orlandi and R.D. Page and J. Pakarinen and N. Patronis and P.J. Peura and E. Piselli and L. Prochniak and P. Rahkila and E. Rapisarda and P. Reiter and A.P. Robinson and M. Scheck and S. Siem and Chakkal, {K. Singh} and J.F. Smith and J. Srebrny and I. Stefanescu and G.M. Tveten and {Van Duppen}, P. and {Van de Walle}, J. and D. Voulot and N. Warr and A. Wiens and J.L. Wood",

year = "2019",

month = aug,

day = "22",

doi = "10.1140/epja/i2019-12815-2",

language = "English",

volume = "55",

journal = "The European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "8",

}

Wrzosek-Lipska, K, Rezynkina, K, Bree, N, Zielinska, M, Gaffney, LP, Petts, A, Andreyev, A, Bastin, B, Bender, M, Blazhev, A, Bruyneel, B, Butler, PA, Carpenter, MP, Cederkall, J, Clement, E, Cocolios, TE, Deacon, AN, Diriken, J, Ekstrom, A, Fitzpatrick, C, Fraile, LM, Fransen, C, Freeman, SJ, Garcia-Ramos, JE, Geibel, K, Gernhauser, R, Grahn, T, Guttormsen, M, Hadinia, B, Hadynska-Klek, K, Hass, M, Heenen, P-H, Herzberg, R-D, Hess, H, Heyde, K, Huyse, M, Ivanov, O, Jenkins, DG, Julin, R, Kesteloot, N, Kroell, T, Kruecken, R, Larsen, AC, Lutter, R, Marley, P, Napiorkowski, PJ, Orlandi, R, Page, RD, Pakarinen, J, Patronis, N, Peura, PJ, Piselli, E, Prochniak, L, Rahkila, P, Rapisarda, E, Reiter, P, Robinson, AP, Scheck, M, Siem, S, Chakkal, KS, Smith, JF, Srebrny, J, Stefanescu, I, Tveten, GM, Van Duppen, P, Van de Walle, J, Voulot, D, Warr, N, Wiens, A & Wood, JL 2019, 'Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of ¹⁸²Hg, ¹⁸⁴Hg, ¹⁸⁶Hg and ¹⁸⁸Hg', The European Physical Journal A, vol. 55, no. 8, 130. https://doi.org/10.1140/epja/i2019-12815-2

TY - JOUR

T1 - Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes

T2 - Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg

AU - Wrzosek-Lipska, K.

AU - Rezynkina, K.

AU - Bree, N.

AU - Zielinska, M.

AU - Gaffney, L.P.

AU - Petts, A.

AU - Andreyev, A.

AU - Bastin, B.

AU - Bender, M.

AU - Blazhev, A.

AU - Bruyneel, B.

AU - Butler, P.A.

AU - Carpenter, M.P.

AU - Cederkall, J.

AU - Clement, E.

AU - Cocolios, T.E.

AU - Deacon, A.N.

AU - Diriken, J.

AU - Ekstrom, A.

AU - Fitzpatrick, C.

AU - Fraile, L.M.

AU - Fransen, Ch.

AU - Freeman, S.J.

AU - Garcia-Ramos, J.E.

AU - Geibel, K.

AU - Gernhauser, R.

AU - Grahn, T.

AU - Guttormsen, M.

AU - Hadinia, B.

AU - Hadynska-Klek, K.

AU - Hass, M.

AU - Heenen, P.-H.

AU - Herzberg, R.-D.

AU - Hess, H.

AU - Heyde, K.

AU - Huyse, M.

AU - Ivanov, O.

AU - Jenkins, D.G.

AU - Julin, R.

AU - Kesteloot, N.

AU - Kroell, Th.

AU - Kruecken, R.

AU - Larsen, A.C.

AU - Lutter, R.

AU - Marley, P.

AU - Napiorkowski, P.J.

AU - Orlandi, R.

AU - Page, R.D.

AU - Pakarinen, J.

AU - Patronis, N.

AU - Peura, P.J.

AU - Piselli, E.

AU - Prochniak, L.

AU - Rahkila, P.

AU - Rapisarda, E.

AU - Reiter, P.

AU - Robinson, A.P.

AU - Scheck, M.

AU - Siem, S.

AU - Chakkal, K. Singh

AU - Smith, J.F.

AU - Srebrny, J.

AU - Stefanescu, I.

AU - Tveten, G.M.

AU - Van Duppen, P.

AU - Van de Walle, J.

AU - Voulot, D.

AU - Warr, N.

AU - Wiens, A.

AU - Wood, J.L.

PY - 2019/8/22

Y1 - 2019/8/22

N2 - The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass 182-188Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. The population of 0+1,2 , 2+1,2 and 4+1 states was observed in all nuclei under study. Reduced E2 matrix elements coupling populated yrast and non-yrast states were extracted, including their relative signs. These are a sensitive probe of shape coexistence and may be used to validate nuclear models. The experimental results are discussed in terms of mixing of two different configurations and are compared with three different model calculations: the Beyond Mean Field model, the Interacting Boson Model with configuration mixing and the General Bohr Hamiltonian. Partial agreement with experiment was observed, hinting to missing ingredients in the theoretical descriptions.

AB - The neutron-deficient mercury isotopes serve as a classical example of shape coexistence, whereby at low energy near-degenerate nuclear states characterized by different shapes appear. The electromagnetic structure of even-mass 182-188Hg isotopes was studied using safe-energy Coulomb excitation of neutron-deficient mercury beams delivered by the REX-ISOLDE facility at CERN. The population of 0+1,2 , 2+1,2 and 4+1 states was observed in all nuclei under study. Reduced E2 matrix elements coupling populated yrast and non-yrast states were extracted, including their relative signs. These are a sensitive probe of shape coexistence and may be used to validate nuclear models. The experimental results are discussed in terms of mixing of two different configurations and are compared with three different model calculations: the Beyond Mean Field model, the Interacting Boson Model with configuration mixing and the General Bohr Hamiltonian. Partial agreement with experiment was observed, hinting to missing ingredients in the theoretical descriptions.

U2 - 10.1140/epja/i2019-12815-2

DO - 10.1140/epja/i2019-12815-2

M3 - Article

SN - 1434-6001

VL - 55

JO - The European Physical Journal A

JF - The European Physical Journal A

IS - 8

M1 - 130

ER -

Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg

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Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of ¹⁸²Hg, ¹⁸⁴Hg, ¹⁸⁶Hg and ¹⁸⁸Hg