72-Hf-157  basic  element

72-hafnium-157 Atomic Mass: 156.9581270 +- 0.0003240 amu # Excess Mass: -39004.000 +- 302.000 keV # Binding Energy: 1249873.000 +- 302.000 keV # Beta Decay Energy: B- -9331.000 +- 670.000 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: 7/2- Half life: 110 ms Mode of decay: Alpha to Yb-153 Branch ratio: 86.00 % Decay energy: 5.880 MeV Mode of decay: EC to Lu-157 Branch ratio: 14.00 % Decay energy: 7.500 MeV Possible parent nuclides: Alpha from W-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)