Heavy neutron-rich nuclei were populated via the fragmentation of a E/A = 1 GeV (208)(82)Pb beam. Secondary fragments were separated and identified and subsequently implanted in a passive stopper. By the detection of delayed gamma 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)(80)Hg, (201,202,204,205)(79)Au, (197,203,204)(78)Pt, (195,199-203)(77)Ir, (193,197-199)(76)Os, (196)(75)Re, (190,191)(74)W, and (189)(73)Ta. 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. ©2011 American Physical Society

This work is supported by the EPSRC (UK) and AWE plc. (UK), the EU Access to Large Scale Facilities Programme (EURONS, EU Contract No. 506065), The Swedish Research Council, The Polish Ministry of Science and Higher Education, The Bulgarian Science Fund, The US Department of Energy (Grant No. DE-FG02-91ER-40609), The Spanish Ministerio de Ciencia e Innovacion under Contract No. FPA2009- 13377-C02-02, The German BMBF, The Hungarian Science Foundation, and the Italian INFN.

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