element
Information about Cerium-123:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:122.935510±0.000540amu #
    Excess Mass (Δ):-60.072000±0.503000MeV #
    Binding Energy:1007.468000±0.503000MeV #
    β- Decay Energy:-9.734000±0.861000MeV #
"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: (5/2)
  • Half life: 3.8 s ( 3.8 sec., λ = 0.182407 s-1)
  • Mode of decay: E.C. to
    123
    57
    La
      (Q = 8.600 MeV)
  • Mode of decay: E.C. +
    1
    1
    p+ to
    122
    56
    Ba
      (Q = 6.900 MeV)
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)