element
Information about Lutetium-155:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:154.954233±0.000144amu #
    Excess Mass (Δ):-42.632000±0.134000MeV #
    Binding Energy:1238.140000±0.134000MeV #
    β- Decay Energy:-7.943000±0.611000MeV #
"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+,3/2+)
  • Half life: 140 ms ( 0.14 sec., λ = 4.95105 s-1)
  • Mode of decay:
    α
    to
    151
    69
    Tm
  • Mode of decay: E.C. to
    155
    70
    Yb

    Meta state at 0.021 Mev
  • Spin: 11/2-) 140
  • Half life: 68 ms ( 0.068 sec., λ = 10.1933 s-1)
  • Mode of decay:
    α
    to
    151
    69
    Tm
      (Q = 5.791 MeV)   Branch ratio: 79.00 %
  • Mode of decay: E.C. to
    155
    70
    Yb
      (Q = 7.991 MeV)   Branch ratio: 21.00 %
    Meta state at 1.798 Mev
  • Spin: 25/2-) 68
  • Half life: 2.60 ms ( 0.0026 sec., λ = 266.595 s-1)
  • Mode of decay:
    α
    to
    151
    69
    Tm
      (Q = 7.568 MeV)   Branch ratio: ~100.00 %

  • Possible parent nuclides:
    α from
    159
    73
    Ta
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)