element
Information about Polonium-218:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:218.008966±0.000003amu
    Excess Mass (Δ):8.351563±0.002532MeV
    Binding Energy:1685.479123±0.002549MeV
    β- Decay Energy:0.264838±0.011719MeV
"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: 3.10 min ( 186 sec., λ = 0.0037266 s-1)
  • Mode of decay:
    α
    to
    214
    82
    Pb
      (Q = 6.115 MeV)   Branch ratio: 99.98 %
  • Mode of decay:
    β-
    to
    218
    85
    At
      (Q = 0.265 MeV)   Branch ratio: 0.02 %

  • Possible parent nuclides:
    α from
    222
    86
    Rn
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)