element
Information about Thallium-185:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:184.979100±0.000430amu #
    Excess Mass (Δ):-19.468000±0.401000MeV #
    Binding Energy:1449.292000±0.401000MeV #
    β- Decay Energy:-7.899000±0.505000MeV #
"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: 19.5 s ( 19.5 sec., λ = 0.035546 s-1)
  • Mode of decay: E.C. to
    185
    80
    Hg
      (Q = 6.600 MeV)
    Meta state at 0.454 Mev
  • Spin: (9/2-) 19.5
  • Half life: 1.83 s ( 1.83 sec., λ = 0.378769 s-1)
  • Mode of decay:
    α
    to
    181
    79
    Au
      (Q = 6.554 MeV)
  • Mode of decay: γ (IT)  (Q = 0.454 MeV)

  • Possible parent nuclides:
    α from
    189
    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)