18-Ar-51  basic  element

18-argon-51 Atomic Mass: 50.9932400 +- 0.0007500 amu # Excess Mass: -6297.000 +- 699.000 keV # Binding Energy: 403852.000 +- 699.000 keV # Beta Decay Energy: B- 15705.000 +- 861.000 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: >200 ns 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)