85-At-218  basic  element

85-astatine-218 Atomic Mass: 218.0086815 +- 0.0000127 amu Excess Mass: 8086.725 +- 11.813 keV Binding Energy: 1684961.608 +- 11.817 keV Beta Decay Energy: B- 2883.107 +- 11.715 keV "The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995. Half life: 1.5 s Mode of decay: Alpha to Bi-214 Branch ratio: 99.90 % Decay energy: 6.874 MeV Mode of decay: Beta to Rn-218 Branch ratio: 0.10 % Decay energy: 2.883 MeV Possible parent nuclides: Beta from Po-218 R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)