element
Information about Actinium-219:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:219.012405±0.000054amu
    Excess Mass (Δ):11.555105±0.050567MeV
    Binding Energy:1686.435137±0.050568MeV
    β- Decay Energy:-2.902847±0.071420MeV
"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: 9/2-
  • Half life: 11.8 µs ( 1.18×10-05 sec., λ = 58741.3 s-1)
  • Mode of decay:
    α
    to
    215
    87
    Fr
      (Q = 8.830 MeV)

  • Possible parent nuclides:
    α from
    223
    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)