element
Information about Gadolinium-140:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:139.933945±0.000433amu #
    Excess Mass (Δ):-61.529000±0.403000MeV #
    Binding Energy:1141.444000±0.403000MeV #
    β- Decay Energy:-10.800000±0.800000MeV #
"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: 0+
  • Half life: 15.8 s ( 15.8 sec., λ = 0.0438701 s-1)
  • Mode of decay:
    E.C.
    to
    140
    63
    Eu
      (Q = 5.500 MeV)

  • Possible parent nuclides:
    E.C. from
    140
    65
    Tb
    E.C. +
    1
    1
    p+ from
    141
    66
    Dy
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)