element
Information about Thallium-209:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:208.985349±0.000010amu
    Excess Mass (Δ):-13.647200±0.009715MeV
    Binding Energy:1637.183042±0.009720MeV
    β- Decay Energy:3.981507±0.009578MeV
"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: (1/2+)
  • Half life: 2.20 min ( 132 sec., λ = 0.00525112 s-1)
  • Mode of decay:
    β-
    to
    209
    82
    Pb
      (Q = 3.980 MeV)

  • Possible parent nuclides:
    α from
    213
    83
    Bi
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)