element
Information about Mendelevium-248:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:248.082909±0.000255amu #
    Excess Mass (Δ):77.229000±0.237000MeV #
    Binding Energy:1845.441000±0.237000MeV #
"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: 7 s ( 7 sec., λ = 0.099021 s-1)
  • Mode of decay: E.C. to
    248
    100
    Fm
      (Q = 5.250 MeV)   Branch ratio: 80.00 %
  • Mode of decay:
    α
    to
    244
    99
    Es
      (Q = 8.700 MeV)   Branch ratio: 20.00 %
  • Mode of decay: SF   (Q = 8.700 MeV)   Branch ratio: <=0.05 %
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)