63-Eu-135  basic  element

63-europium-135 Atomic Mass: 134.9417200 +- 0.0006400 amu # Excess Mass: -54287.000 +- 596.000 keV # Binding Energy: 1094628.000 +- 596.000 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: 1.5 s Mode of decay: Electron capture to Sm-135 Decay energy: 8.700 MeV Mode of decay: EC + Proton to Pm-134 Decay energy: 5.000 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)