element
Information about Iridium-187:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:186.957361±0.000007amu
    Excess Mass (Δ):-39.718125±0.006611MeV
    Binding Energy:1488.814278±0.006616MeV
    β- Decay Energy:-2.978000±0.182000MeV #
"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: 3/2+
  • Half life: 10.5 h ( 37800 sec., λ = 1.83372×10-05 s-1)
  • Mode of decay:
    E.C.
    to
    187
    76
    Os
      (Q = 1.502 MeV)
    Meta state at 0.186 Mev
  • Spin: 9/2- 10.5
  • Half life: 30.3 ms ( 0.0303 sec., λ = 22.8761 s-1)
  • Mode of decay: γ (IT) to
    187
    77
    Ir
      (Q = 0.186 MeV)

  • Possible parent nuclides:
    E.C. from
    187
    78
    Pt
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)
Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev)T1/2Spin    m(nm)    Q(b)    Ref. Std.MethodReference
010.5 h3/2+ +0.941(11) [Ir189]NMR/ONPRL 77 5016 (96)
434152 ns11/2- +6.21(5) TDPADARHMI 52 (77)
3.1(3) [193Ir]TDPADARHMI 52 (77)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.