77-Ir-172  basic  element

77-iridium-172 Atomic Mass: 171.9706430 +- 0.0004300 amu # Excess Mass: -27346.000 +- 401.000 keV # Binding Energy: 1355372.000 +- 401.000 keV # Beta Decay Energy: B- -6272.000 +- 402.000 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: (3+) Half life: 4.4 s Mode of decay: Electron capture to Os-172 Branch ratio: 98.00 % Decay energy: 9.800 MeV Mode of decay: Alpha to Re-168 Branch ratio: ~2.00 % Decay energy: 5.991 MeV Meta state at 0.139 Mev Spin: (7+) Half life: 2.0 s Mode of decay: Electron capture to Os-172 Branch ratio: 77.00 % Decay energy: 9.939 MeV Mode of decay: Alpha to Re-168 Branch ratio: 23.00 % Decay energy: 6.130 MeV Possible parent nuclides: Alpha from Au-176 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)