Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a 208Pb beam

Steer, S.J., Podolyák, Zs., Pietri, S., Gorska, M., Grawe, H., Maier, K.H., Regan, P.H., Rudolph, D., Garnsworthy, A.B., Hoischen, R., Gerl, J., Wollersheim, H.J., Becker, F., Bednarczyk, P., Caceres, L., Doornenbal, P., Geissel, H., Grebosz, J., Kelic, A., Kojouharov, I., Kurz, N., Montes, F., Prokopowicz, W., Saito, T., Schaffner, H., Tashenov, S., Heinz, A., Pfutzner, M., Kurtukian-Nieto, T., Benzoni, G., Jungclaus, A., Balabanski, D.L., Bowry, M., Brandau, C., Brown, A., Bruce, Alison, Catford, W.N., Cullen, I.J., Dombradi, Zs., Estevez, M.E., Gelletly, W., Ilie, G., Jolie, J., Jones, G.A., Kmiecik, M., Kondev, F.G., Krücken, R., Lalkovski, S., Liu, Z., Maj, A., Myalski, S., Schwertel, S., Shizuma, T., Walker, P.M., Werner-Malento, E. and Wieland, O. (2011) Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a 208Pb beam Physical Review C, 84 (4). ISSN 1089-490X

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Heavy neutron-rich nuclei were populated via the fragmentation of a E/A=1 GeV 208 82Pb beam. Secondary fragments were separated and identified and subsequently implanted in a passive stopper. By the detection of delayed γ rays, isomeric decays associated with these nuclei have been identified. A total of 49 isomers were detected, with the majority of them observed for the first time. The newly discovered isomers are in 204,205 80Hg, 201,202,204,205 79Au, 197,203,204 78Pt, 195,199−203 77Ir, 193,197−199 76Os, 196 75Re, 190,191 74W, and 189 73Ta. Possible level schemes are constructed and the structure of the nuclei discussed. To aid the interpretation, shell-model as well as BCS calculations were performed.

Item Type: Journal article
Subjects: F000 Physical Sciences > F300 Physics
DOI (a stable link to the resource): 10.1103/PhysRevC.84.044313
Faculties: Faculty of Science and Engineering > School of Computing, Engineering and Mathematics > Engineering and Product Design Research > Nuclear Physics
Depositing User: editor cmis
Date Deposited: 20 Oct 2011 11:53
Last Modified: 13 Mar 2015 14:04

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