Nuclear structure "southeast" of Pb-208: Isomeric states in Hg-208 and Tl-209

作者：Al Dahan N; Podolyak Zs^*; Regan P H; Gorska M; Grawe H; Maier K H; Gerl J; Pietri S B; Wollersheim H J; Alkhomashi N; Deo A Y; Bacelar A M Denis; Farrelly G; Steer S J; Bruce A M; Boutachkov P; Domingo Pardo C; Algora A; Benlliure J; Bracco A; Calore E; Casarejos E; Cullen I J; Detistov P; Dombradi Zs; Doncel M; Farinon F; Gelletly W; Geissel H; Goel N; Grebosz J; Hoischen R; Kojouharov I; Kurz N; Lalkovski S

来源：Physical Review C, 2009, 80(6): 061302.

DOI：10.1103/PhysRevC.80.061302

The nuclear structure of neutron-rich N>126 nuclei has been investigated following their production via relativistic projectile fragmentation of a E/A=1 GeV U-238 beam. Metastable states in the N=128 isotones Hg-208 and Tl-209 have been identified. Delayed gamma-ray transitions are interpreted as arising from the decay of I-pi=(8( )) and (17/2( )) isomers, respectively. The data allow for the so far most comprehensive verification of the shell-model approach in the region determined by magic numbers Z < 82 and N>126.

• 出版日期2009-12