84-Po-203  basic  element

84-polonium-203 Atomic Mass: 202.9814129 +- 0.0000706 amu Excess Mass: -17313.804 +- 65.721 keV Binding Energy: 1590074.648 +- 65.722 keV Beta Decay Energy: B- -5062.066 +- 124.897 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: 5/2- Half life: 36.7 min Mode of decay: Electron capture to Bi-203 Branch ratio: 99.89 % Decay energy: 4.230 MeV Mode of decay: Alpha to Pb-199 Branch ratio: 0.11 % Decay energy: 5.496 MeV Meta state at 0.641 Mev Spin: 13/2+ Half life: 45 s Mode of decay: IT Branch ratio: ~100.00 % Decay energy: 0.641 MeV Mode of decay: Alpha to Pb-199 Branch ratio: ~0.04 % Decay energy: 6.137 MeV Possible parent nuclides: Electron capture from At-203 Alpha from Rn-207 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) Magnetic Dipole Moments and Electric Quadrupole Moments Ex(kev) T1/2 Spin      m(nm)      Q(b)      Ref. Std. Method Reference 0 36.7 m 5/2- 0.74(6) NO/S JP G17 1673 (91) (+)0.74(3) NO/S Cf87Melb. 174 (87) N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.