Basic Info

Fission Yield


element
Information about Antimony-129:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:128.909150±0.000023amu
    Excess Mass (Δ):-84.626131±0.021428MeV
    Binding Energy:1085.926750±0.021428MeV
    β- Decay Energy:2.379500±0.021213MeV
"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: 7/2+
  • Half life: 4.40 h ( 15840 sec., λ = 4.37593×10-05 s-1)
  • Mode of decay:
    β-
    to
    129
    52
    Te
      (Q = 2.380 MeV)
    Meta state at 1.851 Mev
  • Spin: 19/2-) 4.40
  • Half life: 17.7 min ( 1062 sec., λ = 0.000652681 s-1)
  • Mode of decay:
    β-
    to
    129
    52
    Te
      (Q = 4.231 MeV)   Branch ratio: 85.00 %
  • Mode of decay: γ (IT)  (Q = 1.851 MeV)   Branch ratio: 15.00 %

  • Possible parent nuclides:
    β- from
    129
    50
    Sn
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
04.4 h7/2+ 2.79(2) [123Sb]NMR/ONPR C53 124 (96)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.