91-Pa-226  basic  element

91-protactinium-226 Atomic Mass: 226.0279327 +- 0.0000126 amu Excess Mass: 26019.186 +- 11.726 keV Binding Energy: 1726905.609 +- 11.730 keV Beta Decay Energy: B- -1310.611 +- 21.736 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: 1.8 min Mode of decay: Alpha to Ac-222 Branch ratio: 74.00 % Decay energy: 6.987 MeV Mode of decay: Electron capture to Th-226 Branch ratio: 26.00 % Decay energy: 2.834 MeV Possible parent nuclides: Alpha from Np-230 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)