64-Gd-140  basic  element

64-gadolinium-140 Atomic Mass: 139.9339450 +- 0.0004330 amu # Excess Mass: -61529.000 +- 403.000 keV # Binding Energy: 1141444.000 +- 403.000 keV # Beta Decay Energy: B- -10800.000 +- 800.000 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. Spin: 0+ Half life: 15.8 s Mode of decay: Electron capture to Eu-140 Decay energy: 5.500 MeV Possible parent nuclides: Electron capture from Tb-140 EC + P from Dy-141 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)