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

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Bree, N, Wrzosek-Lipska, K, Petts, A, Andreyev, A, Bastin, B, Bender, M, Blazhev, A, Bruyneel, B, Butler, PA ORCID: 0000-0001-6080-9205, Butterworth, J et al (show 60 more authors) , Carpenter, MP, Cederkall, J, Clement, E, Cocolios, TE, Deacon, A, Diriken, J, Ekstrom, A, Fitzpatrick, C, Fraile, LM, Fransen, C, Freeman, SJ, Gaffney, LP ORCID: 0000-0002-2938-3696, Garcia-Ramos, JE, Geibel, K, Gernhauser, R, Grahn, T, Guttormsen, M, Hadinia, B, Hadynska-Klek, K, Hass, M, Heenen, PH, Herzberg, RD ORCID: 0000-0001-9876-1518, Hess, H, Heyde, K, Huyse, M, Ivanov, O, Jenkins, DG, Julin, R, Kesteloot, N, Kroll, T, Krucken, R, Larsen, AC, Lutter, R, Marley, P, Napiorkowski, PJ, Orlandi, R, Page, RD ORCID: 0009-0009-7062-711X, 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 ORCID: 0000-0001-7275-1063, Wenander, F, Wiens, A, Wood, JL and Zielinska, M (2014) Shape Coexistence in the Neutron- Deficient Even-Even Hg182-188 Isotopes Studied via Coulomb Excitation Physical Review Letters, 112 (16). 162701-. ISSN 0031-9007, 1079-7114

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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 E 2 matrix elements that couple the ground state and low-lying excited states in 182 − 188 Hg 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 182 , 184 Hg . 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.

Item Type:	Article
Additional Information:	Ag3nj Times Cited:0 Cited References Count:37## TULIP Type: Articles/Papers (Journal) ## official_url: <Go to ISI>://000335325900004
Uncontrolled Keywords:	rex-isolde, nuclei, states, intruder, moments, hg-186, pb
Depositing User:	Symplectic Admin
Date Deposited:	14 Jan 2020 11:35
Last Modified:	01 Mar 2026 09:57
DOI:	10.1103/Physrevlett.112.162701
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3070618
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