Acta Physica Polonica B
Vol. 38, No. 4, April 2007, page 1283
Identification of Isomeric States `South' of 208Pb via Projectile Fragmentation
S.J. Steer, Zs. Podolyak, S. Pietri, P.H. Regan, D. Rudolph, E. Werner-Malento, A.B. Garnsworthy, R. Hoischen, M. Gorska, J. Gerl, H.J. Wollersheim, F. Becker, P. Bednarczyk, L. Caceres, P. Doornenbal, H. Geissel, J. Grebosz, A. Kelic, N. Kurz, F. Montes, W. Prokopowicz, T. Saito, H. Schaffner, S. Tachenov, A. Heinz, M. Pfuetzner, T. Kurtukian-Nieto, G. Benzoni, 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, S. Lalkovski, Z. Liu, A. Maj, S. Myalski, T. Shizuma, S. Schwertel, P.M. Walker, O. Wieland
Relativistic fragmentation of 208Pb has been used to produce excited states in neutron-rich nuclei with N\approx 126. Spectroscopic information for a range of nuclei has been obtained through observing delayed \gamma -ray emissions from isomeric states. Preliminary results for 203,204Pt nuclei are presented. For the first time, excited states have been observed in 203Pt and 204Pt. The yrast structure of 204Pt up to spin-parity, I\pi =(10+) has been tentatively inferred from the internal decay of two isomeric states.
PACS numbers: 21.10.--k, 23.20.--g, 25.70.Mn, 27.80.+w