105-Db-257
 basic

 element
105-dubnium-257

  • Atomic Mass: 257.1078580 +- 0.0002500 amu #
  • Excess Mass: 100469.000 +- 233.000 keV #
  • Binding Energy: 1891713.000 +- 233.000 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.
  • Half life: 1.3 s
  • Mode of decay: Alpha to Lr-253
    • Branch ratio: 82.00 %
    • Decay energy: 9.310 MeV
  • Mode of decay: SF
    • Branch ratio: 17.00 %
  • Mode of decay: EC to Rf-257
    • Branch ratio: 1.00 %
    • Decay energy: 4.300 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)