element
Information about Promethium-138:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:137.919445±0.000344amu #
    Excess Mass (Δ):-75.037000±0.320000MeV #
    Binding Energy:1141.156000±0.320000MeV #
    β- Decay Energy:-3.815000±0.438000MeV #
"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: 10 s ( 10 sec., λ = 0.0693147 s-1)
  • Mode of decay:
    E.C.
    to
    138
    60
    Nd
      (Q = 6.900 MeV)
    Meta state at 0.000 Mev
  • Spin: (3+) 10
  • Half life: 3.24 min ( 194.4 sec., λ = 0.00356557 s-1)
  • Mode of decay:
    E.C.
    to
    138
    60
    Nd
      (Q = 6.900 MeV)
    Meta state at 0.000 Mev
  • Spin: (5-) 3.24
  • Half life: 3.24 min ( 194.4 sec., λ = 0.00356557 s-1)
  • Mode of decay:
    E.C.
    to
    138
    60
    Nd
      (Q = 6.900 MeV)

  • Possible parent nuclides:
    E.C. from
    138
    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)
Magnetic Dipole Moments and Electric Quadrupole Moments
Ex(kev)T1/2Spin    m(nm)    Q(b)    Ref. Std.MethodReference
03.5 m(3+) 3.2(9) NO/SHFI 75 471 (92)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.