81-Tl-189  basic  element

81-thallium-189 Atomic Mass: 188.9736890 +- 0.0003720 amu # Excess Mass: -24508.000 +- 347.000 keV # Binding Energy: 1486618.000 +- 347.000 keV # Beta Decay Energy: B- -6698.000 +- 439.000 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. Spin: (1/2+) Half life: 2.3 min Mode of decay: Electron capture to Hg-189 Decay energy: 5.180 MeV Meta state at 0.281 Mev Spin: (9/2-) Half life: 1.4 min Mode of decay: Electron capture to Hg-189 Decay energy: 5.461 MeV Mode of decay: IT to Tl-189 Branch ratio: <4.00 % Decay energy: 0.281 MeV Possible parent nuclides: Alpha from Bi-193 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 281 1.4 m 9/2- +3.878(6) "[203,205" CFBLS PR C36 2560 (87) -2.29(4) CFBLS PR C36 2560 (87) N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.