RT Journal Article
T1 Shape coexistence in the neutron-deficient even-even Hg^(182-188) isotopes studied via Coulomb excitation
A1 Fraile Prieto, Luis Mario
A1 Robinson, Alexander James
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 ^(182−188)Hg were extracted. Information on the deformation of the ground and the first excited 0þ 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 0þ 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.
PB Amer Physical Soc
SN 0031-9007
YR 2014
FD 2014-04-23
LK https://hdl.handle.net/20.500.14352/34281
UL https://hdl.handle.net/20.500.14352/34281
LA eng
NO © 2014 American Physical Society. Artículo firmado por 70 autores. The authors would like to thank the ISOLDE facility for providing excellent beams. This work was supported by the FWO-Vlaanderen (Belgium), an FWO Pegasus Marie Curie Fellowship (L. P. G.), by GOA/2010/010 (BOF KULeuven), by the IAP Belgian Science Policy (BriX network P6/23 and P7/12), by the European Commission within the 7th Framework Programme through I3-ENSAR (Contract No. RII3-CT-2010-262010), by the U.K. Science and Technology Facilities Council, by the German BMBF under Contracts No. 06DA9036I, No. 05P12RDCIA, No. 06KY205I, No. 05P09PKCI5, No. 05P12PKFNE, No. 05P12WOFNF, and No. 09MT9156, Academy of Finland (Contract No. 131665), by the Spanish MINECO through FPA2010-17142 project and the Spanish Project No. FIS2011-28738-C02-02.
NO Unión Europea. FP7
NO Ministerio de Economía y Competitividad (MINECO)
NO German BMBF
NO Academy of Finland
NO IAP Belgian Science Policy
NO the FWO-Vlaanderen (Belgium)
NO FWO Pegasus Marie Curie Fellowship (L. P. G.)
NO the U.K. Science and Technology Facilities Council
NO the Spanish Project
DS Docta Complutense
RD 3 abr 2025