103-Lr-256  basic  element

103-lawrencium-256 Atomic Mass: 256.0987630 +- 0.0002360 amu # Excess Mass: 91997.000 +- 220.000 keV # Binding Energy: 1893679.000 +- 220.000 keV # Beta Decay Energy: B- -2251.000 +- 222.000 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: 28 s Mode of decay: Alpha to Md-252 Branch ratio: >80.00 % Decay energy: 8.880 MeV Mode of decay: EC to No-256 Branch ratio: <20.00 % Decay energy: 4.190 MeV Mode of decay: SF Branch ratio: <0.03 % 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)