154
69
Tm
element 		Information about Thulium-154:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation
    Mass-Energy Data:

    Atomic Mass:153.941424±0.000120amu #
    Excess Mass (Δ):-54.564000±0.112000MeV #
    Binding Energy:1243.565000±0.112000MeV #
    β- Decay Energy:-4.488701±0.052236MeV
"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: (2-)
  • Half life: 8.1 s ( 8.1 sec., λ = 0.0855737 s-1)
  • Mode of decay:
    E.C.
     to
    154
    68
    Er
       (Q = 8.050 MeV)   Branch ratio: 56.00 %
  • Mode of decay:
    α
     to
    150
    67
    Ho
       (Q = 5.090 MeV)   Branch ratio: 44.00 %
    Meta state at 0.000 Mev
  • Spin: (9+) 8.1
  • Half life: 3.30 s ( 3.3 sec., λ = 0.210045 s-1)
  • Mode of decay:
    α
     to
    150
    67
    Ho
       (Q = 5.090 MeV)   Branch ratio: 90.00 %
  • Mode of decay:
    E.C.
     to
    154
    68
    Er
       (Q = 8.050 MeV)   Branch ratio: 10.00 %
  • Mode of decay: γ (IT) to
    154
    69
    Tm

  • Possible parent nuclides:
    E.C. from
    154
    70
    Yb
    α from
    158
    71
    Lu
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)