element
Information about Promethium-140:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:139.915802±0.000032amu
    Excess Mass (Δ):-78.430247±0.030209MeV
    Binding Energy:1160.691882±0.030210MeV
    β- Decay Energy:-2.970861±0.033685MeV
"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: 1+
  • Half life: 9.2 s ( 9.2 sec., λ = 0.0753421 s-1)
  • Mode of decay:
    E.C.
    to
    140
    60
    Nd
      (Q = 6.090 MeV)
    Meta state at 0.000 Mev
  • Spin: 8- 9.2
  • Half life: 5.95 min ( 357 sec., λ = 0.00194159 s-1)
  • Mode of decay:
    E.C.
    to
    140
    60
    Nd
      (Q = 6.090 MeV)

  • Possible parent nuclides:
    E.C. from
    140
    62
    Sm
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)