element
Information about Polonium-217:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:217.006253±0.000108amu #
    Excess Mass (Δ):5.825000±0.100000MeV #
    Binding Energy:1679.934000±0.100000MeV #
    β- Decay Energy:1.438000±0.100000MeV #
"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: <10 s ( 0 sec., λ = inf s-1)
  • Mode of decay:
    α
    to
    213
    82
    Pb
      (Q = 6.660 MeV)   Branch ratio: >95.00 %
  • Mode of decay: β- to
    217
    85
    At
      (Q = 1.530 MeV)   Branch ratio: <5.00 %

  • Possible parent nuclides:
    α from
    221
    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)