element
Information about Neptunium-233:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:233.040732±0.000055amu
    Excess Mass (Δ):37.941934±0.051669MeV
    Binding Energy:1769.917414±0.051670MeV
    β- Decay Energy:-2.100723±0.072213MeV
"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: (5/2+)
  • Half life: 36.2 min ( 2172 sec., λ = 0.000319129 s-1)
  • Mode of decay:
    E.C.
    to
    233
    92
    U
      (Q = 1.230 MeV)
  • Mode of decay:
    α
    to
    229
    91
    Pa
      (Q = 5.830 MeV)   Branch ratio: <0.0=10 %

  • Possible parent nuclides:
    E.C. from
    233
    94
    Pu
    α from
    237
    95
    Am
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)