element
Information about Thallium-181:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:180.986904±0.000405amu #
    Excess Mass (Δ):-12.199000±0.377000MeV #
    Binding Energy:1409.738000±0.377000MeV #
    β- Decay Energy:-9.138000±0.411000MeV #
"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: 3.4 s ( 3.4 sec., λ = 0.203867 s-1)
  • Mode of decay: E.C. to
    181
    80
    Hg
      (Q = 8.500 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)