92-U-231
 basic
 XS graphs

 element
92-uranium-231

  • Atomic Mass: 231.0362892 +- 0.0000044 amu
  • Excess Mass: 33803.128 +- 4.121 keV
  • Binding Energy: 1758695.928 +- 4.132 keV
  • Beta Decay Energy: B- -1810.827 +- 50.653 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: (5/2-)
  • Half life: 4.2 d
  • Mode of decay: Electron capture to Pa-231
    • Decay energy: 0.360 MeV

    Meta state at 0.000 Mev
  • Spin: 2+,5/2+)
  • Half life: 4.2 d
  • Mode of decay: Alpha to Th-227
    • Branch ratio: ~0.004 %
    • Decay energy: 4 5.550 MeV

  • Possible parent nuclides:
    Electron capture from Np-231
    Alpha from Pu-235
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)