element
Information about Cesium-117:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:116.928639±0.000058amu
    Excess Mass (Δ):-66.471883±0.053771MeV
    Binding Energy:967.787214±0.053772MeV
    β- Decay Energy:-9.520000±0.651000MeV #
"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: (9/2+)
  • Half life: 8.4 s ( 8.4 sec., λ = 0.0825175 s-1)
  • Mode of decay:
    E.C.
    to
    117
    54
    Xe
      (Q = 7.520 MeV)
    Meta state at 0.150 Mev
  • Spin: (3/2+) 8.4
  • Half life: 6.5 s ( 6.5 sec., λ = 0.106638 s-1)
  • Mode of decay:
    E.C.
    to
    117
    54
    Xe
      (Q = 7.670 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)