142
65
Tb
element 		Information about Terbium-142:

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

    Atomic Mass:141.938859±0.000818amu #
    Excess Mass (Δ):-56.952000±0.762000MeV #
    Binding Energy:1152.227000±0.762000MeV #
    β- Decay Energy:-6.900000±0.200000MeV #
"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: 597 ms ( 0.597 sec., λ = 1.16105 s-1)
  • Mode of decay:
    E.C.
     to
    142
    64
    Gd
       (Q = 10.100 MeV)
  • Mode of decay: E.C. +
    1
    1
    p+ to
    141
    63
    Eu
       (Q = 6.000 MeV)   Branch ratio: ~3.0E-7 %
    Meta state at 0.280 Mev
  • Spin: (5-) 597
  • Half life: 303 ms ( 0.303 sec., λ = 2.28761 s-1)
  • Mode of decay:
    E.C.
     to
    142
    64
    Gd
       (Q = 10.380 MeV)
  • Mode of decay: E.C. +
    1
    1
    p+ to
    141
    63
    Eu
       (Q = 6.280 MeV)
  • Mode of decay: γ (IT)  (Q = 0.280 MeV)

  • Possible parent nuclides:
    E.C. from
    142
    66
    Dy
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)