element
Information about Californium-246:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:246.068799±0.000002amu
    Excess Mass (Δ):64.085667±0.002221MeV
    Binding Energy:1844.789111±0.002246MeV
    β- Decay Energy:-3.880000±0.224000MeV #
"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: 35.7 h ( 128520 sec., λ = 5.3933×10-06 s-1)
  • Mode of decay:
    α
    to
    242
    96
    Cm
      (Q = 6.862 MeV)
  • Mode of decay: E.C. to
    246
    97
    Bk
      (Q = 0.120 MeV)   Branch ratio: <0.0040 %
  • Mode of decay: SF   Branch ratio: 0.00025 %
    Meta state at 2.500 Mev 35.7
  • Half life: 45 ns ( 4.5×10+10 sec., λ = 1.54033×10-11 s-1)

  • Possible parent nuclides:
    α from
    250
    100
    Fm
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)