93-Np-240
 basic

 element
93-neptunium-240

  • Atomic Mass: 240.0561688 +- 0.0000163 amu
  • Excess Mass: 52320.918 +- 15.154 keV
  • Binding Energy: 1812037.689 +- 15.158 keV
  • Beta Decay Energy: B- 2199.599 +- 15.029 keV
"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.
  • Spin: (5+)
  • Half life: 61.9 min
  • Mode of decay: Beta to Pu-240
    • Decay energy: 2.200 MeV

    Meta state at 0.000 Mev
  • Spin: 1(+)
  • Half life: 7.22 min
  • Mode of decay: Beta to Pu-240
    • Branch ratio: 99.89 %
    • Decay energy: 2.200 MeV

  • Possible parent nuclides:
    Beta from U-240
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)