New μs isomers in the neutron-rich 210Hg nucleus.

Authors :: Gottardo, A.
Valiente-Dobón, J.J.
Benzoni, G.
Gadea, A.
Lunardi, S.
Boutachkov, P.
Bruce, A.M.
Górska, M.
Grebosz, J.
Pietri, S.
Podolyák, Zs.
Pfützner, M.
Regan, P.H.
Weick, H.
Alcántara Núñez, J.
Algora, A.
Al-Dahan, N.
de Angelis, G.
Ayyad, Y.
Alkhomashi, N.
Source :: Physics Letters B. Oct2013, Vol. 725 Issue 4/5, p292-296. 5p.
Publication Year :: 2013
Abstract: Abstract: Neutron-rich nuclei in the lead region, beyond , have been studied at the FRS-RISING setup at GSI, exploiting the fragmentation of a primary uranium beam. Two isomeric states have been identified in 210Hg: the isomer expected from the seniority scheme in the shell and a second one at low spin and low excitation energy. The decay strength of the isomer confirms the need of effective three-body forces in the case of neutron-rich lead isotopes. The other unexpected low-lying isomer has been tentatively assigned as a state, although this is in contrast with theoretical expectations. [Copyright &y& Elsevier]