Basic Info

n-XS summary


element
Information about Californium-251:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:251.079580±0.000005amu
    Excess Mass (Δ):74.128333±0.004545MeV
    Binding Energy:1875.103058±0.004558MeV
    β- Decay Energy:-0.375892±0.007107MeV
"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: 1/2+
  • Half life: 898 years ( 2.83229×10+10 sec., λ = 2.4473×10-11 s-1)
  • Mode of decay:
    α
    to
    247
    96
    Cm
      (Q = 6.176 MeV)

  • Possible parent nuclides:
    β- from
    251
    97
    Bk
    E.C. from
    251
    99
    Es
    α from
    255
    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)