New μs isomers in the neutron-rich 210Hg nucleus

A Gottardo,S Lunardi,R Menegazzo,H Schaffner,Y Ayyad,M Pfützner,P.R.P Allegro,S Leoni,A Corsi,B Million,W Prokopowicz,F Recchia,I Kojouharov,A Algora,F Naqvi,N Alkhomashi,R Janik,T Engert,S Klupp,R Nicolini,M Doncel,P Boutachkov,G De Angelis,A Bracco,H Weick,M Bunce,S Mandal,E Farnea,M Bowry,C Nociforo,T Habermann,I Szarka,P.H Regan,D Mengoni,E Casarejos,J Alcántara Núñez,A Gadea,K Eppinger,F Camera,N Kurz,J Benlliure,D Bazzacco,A Sharma,E Gregor,Zs Podolyák,G Benzoni,R Hoischen,F Farinon,O Wieland,N Goel,M Górska,V Modamio,J Gerl,J J Valiente-Dobón ,Dirk Rudolph ,E Šahin ,M W Reed ,P Strmeň ,J Grębosz ,Davinder Siwal ,G F Farrelly ,H Geißel ,M L Cortés ,Zs Dombrádi ,F C L Crespi ,C A Ur ,P M Walker ,A M Denis Bacelar ,A I Morales ,S M Lenzi ,D R Napoli ,A Procházka ,P R John ,B Sitár ,C Domingo‐Pardo ,A Y Deo ,N Al‐Dahan ,Katja Steiger ,A M Bruce ,Roberto Vicençotto Ribas ,T Swan ,S Piétri ,H J Wollersheim

doi:10.1016/j.physletb.2013.07.053

New μs isomers in the neutron-rich 210Hg nucleus

A Gottardo, S Lunardi + Show 81 more

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https://doi.org/10.1016/j.physletb.2013.07.053

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Journal: Physics Letters B	Publication Date: Jul 31, 2013
Citations: 17	License type: cc-by

Affiliation: National Institute for Nuclear Physics, GSI Helmholtz Centre for Heavy Ion Research, University of Santiago de Compostela, University of Warsaw, University of Milan, University of Cologne, Comenius University Bratislava, Technical University of Munich, University of Valencia, University of Brighton, University of Delhi, University of Surrey, Universidade de Vigo

#Neutron-rich Nuclei #Μs Isomers + Show 8 more

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Abstract

Neutron-rich nuclei in the lead region, beyond N=126, 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 8+ isomer expected from the seniority scheme in the νg9/2 shell and a second one at low spin and low excitation energy. The decay strength of the 8+ 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 3− state, although this is in contrast with theoretical expectations.

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