73-Ta-157  basic  element

73-tantalum-157 Atomic Mass: 156.9681450 +- 0.0006420 amu # Excess Mass: -29673.000 +- 598.000 keV # Binding Energy: 1239759.000 +- 598.000 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: 1/2+ Half life: 10.1 ms Mode of decay: Alpha to Lu-153 Branch ratio: 96.60 % Decay energy: 6.380 MeV Meta state at 0.022 Mev Spin: 11/2- Half life: 4.3 ms Mode of decay: Alpha to Lu-153 Branch ratio: 95.00 % Decay energy: 6.402 MeV Possible parent nuclides: Alpha from Re-161 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)