86-Rn-209  basic  element

86-radon-209 Atomic Mass: 208.9903766 +- 0.0000315 amu Excess Mass: -8964.106 +- 29.372 keV Binding Energy: 1628588.181 +- 29.373 keV Beta Decay Energy: B- -5159.346 +- 42.760 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: 28.5 min Mode of decay: Electron capture to At-209 Branch ratio: 83.00 % Decay energy: 3.930 MeV Mode of decay: Alpha to Po-205 Branch ratio: 17.00 % Decay energy: 6.155 MeV Possible parent nuclides: Electron capture from Fr-209 Alpha from Ra-213 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 29 m 5/2- (+)0.8388(4) [129Xe 236] N/OP PRL 60 2133 (88) +0.31(3) CFBLS CERN EP/87 51 (87) N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.