element
Information about Actinium-210:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:210.009257±0.000201amu
    Excess Mass (Δ):8.622654±0.186956MeV
    Binding Energy:1616.725683±0.186956MeV
    β- Decay Energy:-5.378000±0.242000MeV #
"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.
Radioactive Decay Data:

  • Half life: 0.35 s ( 0.35 sec., λ = 1.98042 s-1)
  • Mode of decay:
    α
    to
    206
    87
    Fr
      (Q = 7.610 MeV)   Branch ratio: ~96.00 %
  • Mode of decay: E.C. to
    210
    88
    Ra
      (Q = 8.200 MeV)   Branch ratio: ~4.00 %
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)