element
Information about Neodymium-129:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:128.933254±0.000385amu #
    Excess Mass (Δ):-62.173000±0.359000MeV #
    Binding Energy:1056.433000±0.359000MeV #
    β- Decay Energy:-9.227000±0.878000MeV #
"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: 4.9 s ( 4.9 sec., λ = 0.141459 s-1)
  • Mode of decay: E.C. to
    129
    59
    Pr
      (Q = 7.800 MeV)   Branch ratio: >0.00 %
  • Mode of decay: E.C. +
    1
    1
    p+ to
    128
    58
    Ce
      (Q = 6.110 MeV)   Branch ratio: >0.00 %
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)