40-Zr-81  basic  element

40-zirconium-81 Atomic Mass: 80.9368153 +- 0.0003184 amu Excess Mass: -58856.164 +- 296.624 keV Binding Energy: 681339.175 +- 296.624 keV Beta Decay Energy: B- -11397.000 +- 498.000 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: 15 s Mode of decay: EC to Y-81 Decay energy: 7.200 MeV Mode of decay: EC + Proton to Sr-80 Decay energy: 4.200 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)