element
Information about Actinium-224:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:224.021708±0.000005amu
    Excess Mass (Δ):20.221274±0.004676MeV
    Binding Energy:1718.125582±0.004685MeV
    β- Decay Energy:0.232115±0.012660MeV
"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:

  • Spin: 0-
  • Half life: 2.78 h ( 10008 sec., λ = 6.92593×10-05 s-1)
  • Mode of decay:
    E.C.
    to
    224
    88
    Ra
      (Q = 1.403 MeV)   Branch ratio: 90.90 %
  • Mode of decay:
    α
    to
    220
    87
    Fr
      (Q = 6.327 MeV)   Branch ratio: 9.10 %
  • Mode of decay: β- to
    224
    90
    Th
      (Q = 0.232 MeV)   Branch ratio: <1.60 %

  • Possible parent nuclides:
    α from
    228
    91
    Pa
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)