element
Information about Holmium-149:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:148.933790±0.000023amu
    Excess Mass (Δ):-61.674261±0.021628MeV
    Binding Energy:1211.883681±0.021629MeV
    β- Decay Energy:-7.810000±0.472000MeV #
"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: 11/2-)
  • Half life: 21.1 s ( 21.1 sec., λ = 0.0328506 s-1)
  • Mode of decay:
    E.C.
    to
    149
    66
    Dy
      (Q = 6.014 MeV)
    Meta state at 0.049 Mev
  • Spin: (1/2+) 21.1
  • Half life: 56 s ( 56 sec., λ = 0.0123776 s-1)
  • Mode of decay:
    E.C.
    to
    149
    66
    Dy
      (Q = 6.063 MeV)

  • Possible parent nuclides:
    E.C. from
    149
    68
    Er
    α from
    153
    69
    Tm
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)