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. Zielińska; L. P. Gaffney; A. Petts; A. Andreyev; B. Bastin; M. Bender; A. Blazhev; B. Bruyneel; P. A. Butler; M. P. Carpenter; J. Cederkäll; E. Clément; T. E. Cocolios; A. N. Deacon; J. Diriken; A. Ekström; C. Fitzpatrick; L. M. Fraile; Ch. Fransen; S. J. Freeman; J. E. García-ramos; K. Geibel; R. Gernhäuser; T. Grahn; M. Guttormsen; B. Hadinia; K. Hadyńska-klȩk; M. Hass; P. -h. Heenen; R. -d. Herzberg; H. Hess; K. Heyde; M. Huyse; O. Ivanov; D. G. Jenkins; R. Julin; N. Kesteloot; Th. Kröll; R. Krücken; 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. Próchniak; 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. Zielińska, L. P. Gaffney, A. Petts, A. Andreyev, B. Bastin, M. Bender, A. Blazhev, B. Bruyneel, P. A. Butler, M. P. Carpenter, J. Cederkäll, E. Clément, T. E. Cocolios, A. N. Deacon, J. Diriken, A. Ekström, C. FitzpatrickL. M. Fraile, Ch. Fransen, S. J. Freeman, J. E. García-ramos, K. Geibel, R. Gernhäuser, T. Grahn, M. Guttormsen, B. Hadinia, K. Hadyńska-klȩk, M. Hass, P. -h. Heenen, R. -d. Herzberg, H. Hess, K. Heyde, M. Huyse, O. Ivanov, D. G. Jenkins, R. Julin, N. Kesteloot, Th. Kröll, R. Krücken, 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. Próchniak, 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

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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 182-188 Hg 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
Journal	The European Physical Journal A: Hadrons and Nuclei
Volume	55
Issue number	8
Early online date	22 Aug 2019
DOIs	https://doi.org/10.1140/epja/i2019-12815-2
Publication status	Published - Aug 2019

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Wrzosek-lipska, K., Rezynkina, K., Bree, N., Zielińska, M., Gaffney, L. P., Petts, A., Andreyev, A., Bastin, B., Bender, M., Blazhev, A., Bruyneel, B., Butler, P. A., Carpenter, M. P., Cederkäll, J., Clément, E., Cocolios, T. E., Deacon, A. N., Diriken, J., Ekström, 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: Hadrons and Nuclei, 55(8). https://doi.org/10.1140/epja/i2019-12815-2

@article{9b4ec77d893c4a06a8d5053241deeb13,

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 182-188 Hg 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. Zieli{\'n}ska and Gaffney, {L. P.} and A. Petts and A. Andreyev and B. Bastin and M. Bender and A. Blazhev and B. Bruyneel and Butler, {P. A.} and Carpenter, {M. P.} and J. Cederk{\"a}ll and E. Cl{\'e}ment and Cocolios, {T. E.} and Deacon, {A. N.} and J. Diriken and A. Ekstr{\"o}m and C. Fitzpatrick and Fraile, {L. M.} and Ch. Fransen and Freeman, {S. J.} and Garc{\'i}a-ramos, {J. E.} and K. Geibel and R. Gernh{\"a}user and T. Grahn and M. Guttormsen and B. Hadinia and K. Hady{\'n}ska-klȩk and M. Hass and Heenen, {P. -h.} and Herzberg, {R. -d.} and H. Hess and K. Heyde and M. Huyse and O. Ivanov and Jenkins, {D. G.} and R. Julin and N. Kesteloot and Th. Kr{\"o}ll and R. Kr{\"u}cken and Larsen, {A. C.} and R. Lutter and P. Marley and Napiorkowski, {P. J.} and R. Orlandi and Page, {R. D.} and J. Pakarinen and N. Patronis and Peura, {P. J.} and E. Piselli and L. Pr{\'o}chniak and P. Rahkila and E. Rapisarda and P. Reiter and Robinson, {A. P.} and M. Scheck and S. Siem and {Singh Chakkal}, K. and Smith, {J. F.} and J. Srebrny and I. Stefanescu and Tveten, {G. M.} and {Van Duppen}, P. and {Van De Walle}, J. and D. Voulot and N. Warr and A. Wiens and Wood, {J. L.}",

year = "2019",

month = aug,

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

language = "English",

volume = "55",

journal = "The European Physical Journal A: Hadrons and Nuclei",

issn = "1434-6001",

publisher = "Springer Nature",

number = "8",

}

Wrzosek-lipska, K, Rezynkina, K, Bree, N, Zielińska, M, Gaffney, LP, Petts, A, Andreyev, A, Bastin, B, Bender, M, Blazhev, A, Bruyneel, B, Butler, PA, Carpenter, MP, Cederkäll, J, Clément, E, Cocolios, TE, Deacon, AN, Diriken, J, Ekström, A, Fitzpatrick, C, Fraile, LM, Fransen, C, Freeman, SJ, García-ramos, JE, Geibel, K, Gernhäuser, R, Grahn, T, Guttormsen, M, Hadinia, B, Hadyńska-klȩk, K, Hass, M, Heenen, P, Herzberg, R, Hess, H, Heyde, K, Huyse, M, Ivanov, O, Jenkins, DG, Julin, R, Kesteloot, N, Kröll, T, Krücken, R, Larsen, AC, Lutter, R, Marley, P, Napiorkowski, PJ, Orlandi, R, Page, RD, Pakarinen, J, Patronis, N, Peura, PJ, Piselli, E, Próchniak, L, Rahkila, P, Rapisarda, E, Reiter, P, Robinson, AP, Scheck, M, Siem, S, Singh Chakkal, K, 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: Hadrons and Nuclei, vol. 55, no. 8. https://doi.org/10.1140/epja/i2019-12815-2

TY - JOUR

T1 - Electromagnetic properties of low-lying states in neutron-deficient Hg isotopes: Coulomb excitation of 182Hg, 184Hg, 186Hg and 188Hg

AU - Wrzosek-lipska, K.

AU - Rezynkina, K.

AU - Bree, N.

AU - Zielińska, 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 - Cederkäll, J.

AU - Clément, E.

AU - Cocolios, T. E.

AU - Deacon, A. N.

AU - Diriken, J.

AU - Ekström, A.

AU - Fitzpatrick, C.

AU - Fraile, L. M.

AU - Fransen, Ch.

AU - Freeman, S. J.

AU - García-ramos, J. E.

AU - Geibel, K.

AU - Gernhäuser, R.

AU - Grahn, T.

AU - Guttormsen, M.

AU - Hadinia, B.

AU - Hadyńska-klȩk, 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 - Kröll, Th.

AU - Krücken, 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 - Próchniak, L.

AU - Rahkila, P.

AU - Rapisarda, E.

AU - Reiter, P.

AU - Robinson, A. P.

AU - Scheck, M.

AU - Siem, S.

AU - Singh Chakkal, K.

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

Y1 - 2019/8

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 182-188 Hg 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 182-188 Hg 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: Hadrons and Nuclei

JF - The European Physical Journal A: Hadrons and Nuclei

IS - 8

ER -

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

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