element
Information about Neptunium-225:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:225.033900±0.000077amu
    Excess Mass (Δ):31.577352±0.071900MeV
    Binding Energy:1711.711413±0.071901MeV
"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: (9/2-)
  • Half life: >2 µs ( 0 sec., λ = inf s-1)
  • Mode of decay: α to
    221
    91
    Pa
      (Q = 8.790 MeV)
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)