element
Information about Polonium-195:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:194.988045±0.000236amu #
    Excess Mass (Δ):-11.136000±0.220000MeV #
    Binding Energy:1519.326000±0.220000MeV #
    β- Decay Energy:-7.925000±0.460000MeV #
"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: (3/2-)
  • Half life: 4.64 s ( 4.64 sec., λ = 0.149385 s-1)
  • Mode of decay:
    α
    to
    191
    82
    Pb
      (Q = 6.750 MeV)   Branch ratio: 75.00 %
  • Mode of decay: E.C. to
    195
    83
    Bi
      (Q = 6.800 MeV)   Branch ratio: 25.00 %
    Meta state at 0.230 Mev
  • Spin: 13/2+) 4.64
  • Half life: 1.92 s ( 1.92 sec., λ = 0.361014 s-1)
  • Mode of decay:
    α
    to
    191
    82
    Pb
      (Q = 6.980 MeV)   Branch ratio: ~90.00 %
  • Mode of decay: E.C. to
    195
    83
    Bi
      (Q = 7.030 MeV)   Branch ratio: ~10.00 %
  • Mode of decay: γ (IT) to
    195
    84
    Po
      (Q = 0.230 MeV)   Branch ratio: <0.01 %

  • Possible parent nuclides:
    α from
    199
    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)