85-At-204  basic  element

85-astatine-204 Atomic Mass: 203.9872616 +- 0.0000997 amu Excess Mass: -11865.779 +- 92.828 keV Binding Energy: 1591915.593 +- 92.829 keV Beta Decay Energy: B- -3822.000 +- 168.000 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. Spin: 7+ Half life: 9.2 min Mode of decay: Electron capture to Po-204 Branch ratio: 96.20 % Decay energy: 6.480 MeV Mode of decay: Alpha to Bi-200 Branch ratio: 3.80 % Decay energy: 6.070 MeV Meta state at 0.587 Mev Spin: (10-) Half life: 108 ms Mode of decay: IT Decay energy: 0.587 MeV Possible parent nuclides: Alpha from Fr-208 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)