element
Information about Californium-256:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:256.093440±0.000320amu #
    Excess Mass (Δ):87.039000±0.298000MeV #
    Binding Energy:1902.549000±0.298000MeV #
    β- Decay Energy:-0.141000±0.314000MeV #
"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: 0+
  • Half life: 12.3 min ( 738 sec., λ = 0.000939224 s-1)
  • Mode of decay: SF
  • Mode of decay: β- to
    256
    99
    Es
      Branch ratio: <1.00 %
  • Mode of decay: α to
    252
    96
    Cm
      (Q = 5.600 MeV)   Branch ratio: ~1.0E-6 %
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)