element
Information about Iridium-181:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:180.957642±0.000226amu
    Excess Mass (Δ):-39.456072±0.210530MeV
    Binding Energy:1440.124288±0.210530MeV
    β- Decay Energy:-5.156000±0.348000MeV #
"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: (5/2)-
  • Half life: 4.90 min ( 294 sec., λ = 0.00235764 s-1)
  • Mode of decay:
    E.C.
    to
    181
    76
    Os
      (Q = 4.070 MeV)

  • Possible parent nuclides:
    α from
    185
    79
    Au
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)