89-Ac-208  basic  element

89-actinium-208 Atomic Mass: 208.0114850 +- 0.0002230 amu # Excess Mass: 10698.000 +- 207.000 keV # Binding Energy: 1598508.000 +- 207.000 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: (3+) Half life: 95 ms Mode of decay: Alpha to Fr-204 Branch ratio: ~99.00 % Decay energy: 7.720 MeV Meta state at 0.506 Mev Spin: (10-) Half life: 25 ms Mode of decay: Alpha to Fr-204 Branch ratio: ~90.00 % Decay energy: 8.226 MeV 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)