element
Information about Lanthanum-120:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:119.938070±0.000640amu #
    Excess Mass (Δ):-57.687000±0.596000MeV #
    Binding Energy:981.652000±0.596000MeV #
    β- Decay Energy:-7.983000±0.999000MeV #
"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:

  • Half life: 2.8 s ( 2.8 sec., λ = 0.247553 s-1)
  • Mode of decay: E.C. to
    120
    56
    Ba
      (Q = 11.200 MeV)
  • Mode of decay: E.C. +
    1
    1
    p+ to
    119
    55
    Cs
      (Q = 7.400 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)