129
49
In


Basic Info

Fission Yield

element 		Information about Indium-129:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation
    Mass-Energy Data:

    Atomic Mass:128.921658±0.000135amu
    Excess Mass (Δ):-72.975131±0.126028MeV
    Binding Energy:1075.840457±0.126028MeV
    β- Decay Energy:7.655000±0.032000MeV
"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: (9/2+)
  • Half life: 0.61 s ( 0.61 sec., λ = 1.13631 s-1)
  • Mode of decay:
    β-
     to
    129
    50
    Sn
       (Q = 7.660 MeV)
  • Mode of decay: β- +
    1
    0
    n to
    128
    50
    Sn
       (Q = 2.290 MeV)   Branch ratio: 0.25 %
    Meta state at 0.380 Mev
  • Spin: (1/2-) 0.61
  • Half life: 1.23 s ( 1.23 sec., λ = 0.563534 s-1)
  • Mode of decay:
    β-
     to
    129
    50
    Sn
       (Q = 8.040 MeV)   Branch ratio: >99.70 %
  • Mode of decay: β- +
    1
    0
    n to
    128
    50
    Sn
       (Q = 2.670 MeV)   Branch ratio: 2.50 %
  • Mode of decay: γ (IT) to
    129
    49
    In
       (Q = 0.380 MeV)   Branch ratio: <0.30 %

  • Possible parent nuclides:
    β- from
    129
    48
    Cd
    β- +
    1
    0
    n from
    130
    48
    Cd
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)