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Shape coexistence in the neutron-deficient even-even Hg182-188 isotopes studied via Coulomb excitation

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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 Hg-182; 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.
Keywords
HG-186, MOMENTS, STATES, PB, REX-ISOLDE, INTRUDER, NUCLEI

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Chicago
Bree, N, K Wrzosek-Lipska, A Petts, A Andreyev, B Bastin, M Bender, A Blazhev, et al. 2014. “Shape Coexistence in the Neutron-deficient Even-even Hg182-188 Isotopes Studied via Coulomb Excitation.” Physical Review Letters 112 (16).
APA
Bree, N., Wrzosek-Lipska, K., Petts, A., Andreyev, A., Bastin, B., Bender, M., Blazhev, A., et al. (2014). Shape coexistence in the neutron-deficient even-even Hg182-188 isotopes studied via Coulomb excitation. PHYSICAL REVIEW LETTERS, 112(16).
Vancouver
1.
Bree N, Wrzosek-Lipska K, Petts A, Andreyev A, Bastin B, Bender M, et al. Shape coexistence in the neutron-deficient even-even Hg182-188 isotopes studied via Coulomb excitation. PHYSICAL REVIEW LETTERS. 2014;112(16).
MLA
Bree, N et al. “Shape Coexistence in the Neutron-deficient Even-even Hg182-188 Isotopes Studied via Coulomb Excitation.” PHYSICAL REVIEW LETTERS 112.16 (2014): n. pag. Print.
@article{5811203,
  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 Hg-182; 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.},
  articleno    = {162701},
  author       = {Bree, N and Wrzosek-Lipska, K and Petts, A and Andreyev, A and Bastin, B and Bender, M and Blazhev, A and Bruyneel, B and Butler, PA and Butterworth, J and Carpenter, MP and Cederk{\"a}ll, J and Cl{\'e}ment, E and Cocolios, TE and Deacon, A and Diriken, J and Ekstr{\"o}m, A and Fitzpatrick, C and Fraile, LM and Fransen, Ch and Freeman, SJ and Gaffney, LP and Garc{\'i}a-Ramos, JE and Geibel, K and Gernh{\"a}user, R and Grahn, T and Guttormsen, M and Hadinia, B and Hady\'{n}ska-Kl\k{e}k, K and Hass, M and Heenen, P-H and Herzberg, R-D and Hess, H and Heyde, Kristiaan and Huyse, M and Ivanov, O and Jenkins, DG and Julin, R and Kesteloot, N and Kr{\"o}ll, Th and Kr{\"u}cken, R and Larsen, AC and Lutter, R and Marley, P and Napiorkowski, PJ and Orlandi, R and Page, RD and Pakarinen, J and Patronis, N and Peura, PJ and Piselli, E and Rahkila, P and Rapisarda, E and Reiter, P and Robinson, AP and Scheck, M and Siem, S and Singh Chakkal, K and Smith, JF and Srebrny, J and Stefanescu, I and Tveten, GM and Van Duppen, P and Van de Walle, J and Voulot, D and Warr, N and Wenander, F and Wiens, A and Wood, JL and Zieli\'{n}ska, M},
  issn         = {0031-9007},
  journal      = {PHYSICAL REVIEW LETTERS},
  language     = {eng},
  number       = {16},
  pages        = {5},
  title        = {Shape coexistence in the neutron-deficient even-even Hg182-188 isotopes studied via Coulomb excitation},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.112.162701},
  volume       = {112},
  year         = {2014},
}

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