57-La-123  basic  element

57-lanthanum-123 Atomic Mass: 122.9262400 +- 0.0004300 amu # Excess Mass: -68707.000 +- 401.000 keV # Binding Energy: 1016886.000 +- 401.000 keV # Beta Decay Energy: B- -8635.000 +- 643.000 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: 17 s Mode of decay: Electron capture to Ba-123 Decay energy: 6.900 MeV Possible parent nuclides: EC + P from Pr-124 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)