102-No-251  basic  element

102-nobelium-251 Atomic Mass: 251.0889600 +- 0.0001940 amu # Excess Mass: 82866.000 +- 181.000 keV # Binding Energy: 1863236.000 +- 181.000 keV # Beta Decay Energy: B- -5030.000 +- 349.000 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: 0.8 s Mode of decay: Alpha to Fm-247 Branch ratio: ~100.00 % Decay energy: 8.890 MeV Mode of decay: SF Branch ratio: <10.00 % Decay energy: 3.780 MeV Mode of decay: EC to Md-251 Branch ratio: ~1.00 % Decay energy: 3.780 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)