103-Lr-258  basic  element

103-lawrencium-258 Atomic Mass: 258.1018830 +- 0.0001100 amu # Excess Mass: 94903.000 +- 102.000 keV # Binding Energy: 1906916.000 +- 102.000 keV # Beta Decay Energy: B- -1570.000 +- 225.000 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: 3.9 s Mode of decay: Alpha to Md-254 Branch ratio: >95.00 % Decay energy: 8.900 MeV Mode of decay: EC to No-258 Branch ratio: <5.00 % Decay energy: 3.380 MeV Mode of decay: SF Branch ratio: <5.00 % Decay energy: 3.380 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)