100-Fm-255
 basic
 n-XS summary
 XS graphs

 element
100-fermium-255

  • Atomic Mass: 255.0899555 +- 0.0000052 amu
  • Excess Mass: 83792.964 +- 4.885 keV
  • Binding Energy: 1896159.012 +- 4.897 keV
  • Beta Decay Energy: B- -1043.022 +- 8.137 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: 7/2+
  • Half life: 20.07 h
  • Mode of decay: Alpha to Cf-251
    • Decay energy: 7.241 MeV
  • Mode of decay: SF
    • Branch ratio: 0.000024 %
    • Decay energy: 4 0.000 MeV

  • Possible parent nuclides:
    Beta from Es-255
    Electron capture from Md-255
    Alpha from No-259
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)