84-Po-197  basic  element

84-polonium-197 Atomic Mass: 196.9855670 +- 0.0002070 amu # Excess Mass: -13445.000 +- 193.000 keV # Binding Energy: 1537778.000 +- 193.000 keV # Beta Decay Energy: B- -7194.000 +- 400.000 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: (3/2-) Half life: 53.6 s Mode of decay: EC to Bi-197 Branch ratio: 56.00 % Decay energy: 6.200 MeV Mode of decay: Alpha to Pb-193 Branch ratio: 44.00 % Decay energy: 6.410 MeV Meta state at 0.204 Mev Spin: 13/2+) Half life: 25.8 s Mode of decay: Alpha to Pb-193 Branch ratio: 84.00 % Decay energy: 6.614 MeV Mode of decay: EC to Bi-197 Branch ratio: 16.00 % Decay energy: 6.404 MeV Mode of decay: IT to Po-197 Branch ratio: 0.01 % Decay energy: 0.204 MeV Possible parent nuclides: Alpha from Rn-201 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)