element
Information about Thorium-211:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:211.014858±0.000449amu #
    Excess Mass (Δ):13.840000±0.418000MeV #
    Binding Energy:1618.798000±0.418000MeV #
"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: 37 ms ( 0.037 sec., λ = 18.7337 s-1)
  • Mode of decay:
    α
    to
    207
    88
    Ra
      (Q = 7.940 MeV)
  • Mode of decay: E.C. to
    211
    89
    Ac
      (Q = 6.700 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)