Shape Coexistence in the Neutron- Deficient Even-Even Hg182-188 Isotopes Studied via Coulomb Excitation

N. Bree; K. Wrzosek-Lipska; A. Petts; A. Andreyev; B. Bastin; M. Bender; A. Blazhev; B. Bruyneel; P. A. Butler; J. Butterworth; M. P. Carpenter; J. Cederkaell; E. Clement; T. E. Cocolios; A. Deacon; J. Diriken; A. Ekstroem; C. Fitzpatrick; L. M. Fraile; Ch. Fransen; S. J. Freeman; L. P. Gaffney; J. E. Garcia-Ramos; K. Geibel; R. Gernhaeuser; 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. 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; 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; F. Wenander; A. Wiens; J. L. Wood; M. Zielinska

doi:10.1103/PhysRevLett.112.162701

Shape Coexistence in the Neutron- Deficient Even-Even Hg^182-188 Isotopes Studied via Coulomb Excitation

N. Bree, K. Wrzosek-Lipska^*, A. Petts, A. Andreyev, B. Bastin, M. Bender, A. Blazhev, B. Bruyneel, P. A. Butler, J. Butterworth, M. P. Carpenter, J. Cederkaell, E. Clement, T. E. Cocolios, A. Deacon, J. Diriken, A. Ekstroem, C. Fitzpatrick, L. M. Fraile, Ch. FransenS. J. Freeman, L. P. Gaffney, J. E. Garcia-Ramos, K. Geibel, R. Gernhaeuser, 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. 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, 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, F. Wenander, A. Wiens, J. L. Wood, M. Zielinska

^*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

Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV/nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that couple the ground state and low-lying excited states in Hg182−188 were extracted. Information on the deformation of the ground and the first excited 0+ states was deduced using the quadrupole sum rules approach. Results show that the ground state is slightly deformed and of oblate nature, while a larger deformation for the excited 0+ state was noted in Hg182,184. The results are compared to beyond mean field and interacting-boson based models and interpreted within a two-state mixing model. Partial agreement with the model calculations was obtained. The presence of two different structures in the light even-mass mercury isotopes that coexist at low excitation energy is firmly established.

Original language	English
Article number	162701
Journal	Physical Review Letters
Volume	112
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.112.162701
Publication status	Published - 23 Apr 2014

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10.1103/PhysRevLett.112.162701

Marcus Scheck
- School of Computing, Engineering and Physical Sciences
Person: Academic

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Bree, N., Wrzosek-Lipska, K., Petts, A., Andreyev, A., Bastin, B., Bender, M., Blazhev, A., Bruyneel, B., Butler, P. A., Butterworth, J., Carpenter, M. P., Cederkaell, J., Clement, E., Cocolios, T. E., Deacon, A., Diriken, J., Ekstroem, A., Fitzpatrick, C., Fraile, L. M., ... Zielinska, M. (2014). Shape Coexistence in the Neutron- Deficient Even-Even Hg^182-188 Isotopes Studied via Coulomb Excitation. Physical Review Letters, 112(16), Article 162701. https://doi.org/10.1103/PhysRevLett.112.162701

@article{fae4ca3effc3442780599811d6daf0bd,

title = "Shape Coexistence in the Neutron- Deficient Even-Even Hg182-188 Isotopes Studied via Coulomb Excitation",

abstract = "Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV/nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that couple the ground state and low-lying excited states in Hg182−188 were extracted. Information on the deformation of the ground and the first excited 0+ states was deduced using the quadrupole sum rules approach. Results show that the ground state is slightly deformed and of oblate nature, while a larger deformation for the excited 0+ state was noted in Hg182,184. The results are compared to beyond mean field and interacting-boson based models and interpreted within a two-state mixing model. Partial agreement with the model calculations was obtained. The presence of two different structures in the light even-mass mercury isotopes that coexist at low excitation energy is firmly established.",

author = "N. Bree and K. Wrzosek-Lipska and A. Petts and A. Andreyev and B. Bastin and M. Bender and A. Blazhev and B. Bruyneel and Butler, \{P. A.\} and J. Butterworth and Carpenter, \{M. P.\} and J. Cederkaell and E. Clement and Cocolios, \{T. E.\} and A. Deacon and J. Diriken and A. Ekstroem and C. Fitzpatrick and Fraile, \{L. M.\} and Ch. Fransen and Freeman, \{S. J.\} and Gaffney, \{L. P.\} and Garcia-Ramos, \{J. E.\} and K. Geibel and R. Gernhaeuser and T. Grahn and M. Guttormsen and B. Hadinia and K. Hadynska-Klek 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 P. Rahkila and E. Rapisarda and P. Reiter and Robinson, \{A. P.\} and M. Scheck and S. Siem and Chakkal, \{K. Singh\} and Smith, \{J. F.\} and J. Srebrny and I. Stefanescu and Tveten, \{G. M.\} and \{Van Duppen\}, P. and \{de Walle\}, \{J. Van\} and D. Voulot and N. Warr and F. Wenander and A. Wiens and Wood, \{J. L.\} and M. Zielinska",

year = "2014",

month = apr,

day = "23",

doi = "10.1103/PhysRevLett.112.162701",

language = "English",

volume = "112",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

}

Bree, N, Wrzosek-Lipska, K, Petts, A, Andreyev, A, Bastin, B, Bender, M, Blazhev, A, Bruyneel, B, Butler, PA, Butterworth, J, Carpenter, MP, Cederkaell, J, Clement, E, Cocolios, TE, Deacon, A, Diriken, J, Ekstroem, A, Fitzpatrick, C, Fraile, LM, Fransen, C, Freeman, SJ, Gaffney, LP, Garcia-Ramos, JE, Geibel, K, Gernhaeuser, 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, Kröll, T, Krücken, R, Larsen, AC, Lutter, R, Marley, P, Napiorkowski, PJ, Orlandi, R, Page, RD, Pakarinen, J, Patronis, N, Peura, PJ, Piselli, E, 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, de Walle, JV, Voulot, D, Warr, N, Wenander, F, Wiens, A, Wood, JL & Zielinska, M 2014, 'Shape Coexistence in the Neutron- Deficient Even-Even Hg^182-188 Isotopes Studied via Coulomb Excitation', Physical Review Letters, vol. 112, no. 16, 162701. https://doi.org/10.1103/PhysRevLett.112.162701

TY - JOUR

T1 - Shape Coexistence in the Neutron- Deficient Even-Even Hg182-188 Isotopes Studied via Coulomb Excitation

AU - Bree, N.

AU - Wrzosek-Lipska, K.

AU - Petts, A.

AU - Andreyev, A.

AU - Bastin, B.

AU - Bender, M.

AU - Blazhev, A.

AU - Bruyneel, B.

AU - Butler, P. A.

AU - Butterworth, J.

AU - Carpenter, M. P.

AU - Cederkaell, J.

AU - Clement, E.

AU - Cocolios, T. E.

AU - Deacon, A.

AU - Diriken, J.

AU - Ekstroem, A.

AU - Fitzpatrick, C.

AU - Fraile, L. M.

AU - Fransen, Ch.

AU - Freeman, S. J.

AU - Gaffney, L. P.

AU - Garcia-Ramos, J. E.

AU - Geibel, K.

AU - Gernhaeuser, 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 - 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 - 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 - de Walle, J. Van

AU - Voulot, D.

AU - Warr, N.

AU - Wenander, F.

AU - Wiens, A.

AU - Wood, J. L.

AU - Zielinska, M.

PY - 2014/4/23

Y1 - 2014/4/23

N2 - Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV/nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that couple the ground state and low-lying excited states in Hg182−188 were extracted. Information on the deformation of the ground and the first excited 0+ states was deduced using the quadrupole sum rules approach. Results show that the ground state is slightly deformed and of oblate nature, while a larger deformation for the excited 0+ state was noted in Hg182,184. The results are compared to beyond mean field and interacting-boson based models and interpreted within a two-state mixing model. Partial agreement with the model calculations was obtained. The presence of two different structures in the light even-mass mercury isotopes that coexist at low excitation energy is firmly established.

AB - Coulomb-excitation experiments to study electromagnetic properties of radioactive even-even Hg isotopes were performed with 2.85 MeV/nucleon mercury beams from REX-ISOLDE. Magnitudes and relative signs of the reduced E2 matrix elements that couple the ground state and low-lying excited states in Hg182−188 were extracted. Information on the deformation of the ground and the first excited 0+ states was deduced using the quadrupole sum rules approach. Results show that the ground state is slightly deformed and of oblate nature, while a larger deformation for the excited 0+ state was noted in Hg182,184. The results are compared to beyond mean field and interacting-boson based models and interpreted within a two-state mixing model. Partial agreement with the model calculations was obtained. The presence of two different structures in the light even-mass mercury isotopes that coexist at low excitation energy is firmly established.

U2 - 10.1103/PhysRevLett.112.162701

DO - 10.1103/PhysRevLett.112.162701

M3 - Article

SN - 0031-9007

VL - 112

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 162701

ER -

Shape Coexistence in the Neutron- Deficient Even-Even Hg182-188 Isotopes Studied via Coulomb Excitation

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Shape Coexistence in the Neutron- Deficient Even-Even Hg^182-188 Isotopes Studied via Coulomb Excitation