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)