element
Information about Polonium-191:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:190.994653±0.000321amu #
    Excess Mass (Δ):-4.980000±0.299000MeV #
    Binding Energy:1480.885000±0.299000MeV #
"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: 15.5 ms ( 0.0155 sec., λ = 44.7192 s-1)
  • Mode of decay: α to
    187
    82
    Pb
      (Q = 7.471 MeV)
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)