84-Po-217  basic  element

84-polonium-217 Atomic Mass: 217.0062530 +- 0.0001080 amu # Excess Mass: 5825.000 +- 100.000 keV # Binding Energy: 1679934.000 +- 100.000 keV # Beta Decay Energy: B- 1438.000 +- 100.000 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: <10 s Mode of decay: Alpha to Pb-213 Branch ratio: >95.00 % Decay energy: 6.660 MeV Mode of decay: Beta to At-217 Branch ratio: <5.00 % Decay energy: 1.530 MeV Possible parent nuclides: Alpha from Rn-221 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)