Nuclear Data Sheets for A = 218

Nuclear spectroscopic information for known nuclides of mass number 218 (Bi,Po,At,Rn,Fr,Ra,Ac,Th,Pa,U) with Z = 83 to 92 and N = 135 to 126 have been evaluated and presented together with adopted energies and Jπ of levels in these nuclei. No excited state data are yet available for 218Bi, 218At and 218Pa. Octupole structures are known in 218Rn, 218Fr, 218Ra and 218Ac nuclides. Since the previous update (1995El08) about ten years ago, many new data are available e.g. decays of 218Bi to 218Po, 222Ra to 218Rn and 222Th to 218Ra; high-spin structures in 218Rn and 218Fr; and lifetimes of excited states in 218Ra. This evaluation supersedes previous full evaluations of A = 218 published by 1987El12 and 1977To13; and an interim evaluation published in ‘update’ mode by 1995El08 with literature cutoff date of August 1995.