REVISION OF THE K-ISOMER IN W-190(116)

G F Farrelly,Zs Podolyak,S J Steer,S Pietri,F R Xu,E Wernermalento,Toshiyuki Shizuma,P H Regan,Dirk Rudolph,A B Garnsworthy,R Hoischen,M Gorska,J Gerl,H J Wollersheim,T Kurtukiannieto,G Benzoni,F Becker,P Bednarczyk,L Caceres,P Doornenbal, H Geisserl,J Grebosz,A Kelic, I Kojouharov,Nathan Kurz,F Montes,W Prokopowicz,T Saito,H Schaffner, S Tashenov,A Heinz, M Pfuezner,A Jungclaus,D L Balabanski,C Brandau,A M Bruce,W N Catford,I J Cullen,Zs Dombradi,E Estevez,W Gelletly,G Ilie,J Jolie,G A Jones,M Kmiecik,F G Kondev,R Kruecken,S Lalkovski, H L Liu, Zhengtang Liu,A Maj,S Myalski, S Schwerrel,P M Walker,O Wieland

Acta Physica Polonica B（2009）

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摘要

Gamma rays from the decay of an isomer in W-190(116) have been observed following projectile fragmentation of a 1 GeV per nucleon Pb-208 beam. An earlier experiment indicated decay from a (10(-)) isomer to the ground state rotational band. Improved statistics have enabled gamma coincidence and time-difference measurements to be made which alter the previous interpretation. Blocked BCS calculations have also been used together with reduced hindrance factors to indicate possible values of spin-parity for the isomer.

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关键词

ground state,gamma ray

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