89-Ac-207  basic  element

89-actinium-207 Atomic Mass: 207.0120940 +- 0.0002520 amu # Excess Mass: 11265.000 +- 234.000 keV # Binding Energy: 1589869.000 +- 234.000 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: (9/2-) Half life: 22 ms Mode of decay: Alpha to Fr-203 Branch ratio: ~100.00 % Decay energy: 7.860 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)