element
Information about Radium-218:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:218.007124±0.000012amu
    Excess Mass (Δ):6.635913±0.011491MeV
    Binding Energy:1684.065359±0.011495MeV
    β- Decay Energy:-4.192744±0.051951MeV
"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: 25.6 µs ( 2.56×10-05 sec., λ = 27076.1 s-1)
  • Mode of decay:
    α
    to
    214
    86
    Rn
      (Q = 8.546 MeV)

  • Possible parent nuclides:
    α from
    222
    90
    Th
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)