86-Rn-208  basic  element

86-radon-208 Atomic Mass: 207.9896312 +- 0.0000145 amu Excess Mass: -9658.440 +- 13.500 keV Binding Energy: 1621211.191 +- 13.503 keV Beta Decay Energy: B- -6988.638 +- 79.335 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: 0+ Half life: 24.35 min Mode of decay: Alpha to Po-204 Branch ratio: 62.00 % Decay energy: 6.260 MeV Mode of decay: Electron capture to At-208 Branch ratio: 38.00 % Decay energy: 2.850 MeV Possible parent nuclides: Electron capture from Fr-208 Alpha from Ra-212 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 1826 490 ns 8+ 6.98(8) TDPAD HFI 9 87 (81) 0.39(5) [212Rn 1694] TDPAD PL 182B 11 (86) 2615 22 ns 10- 10.77(10) TDPAD HFI 9 87 (81) N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.