55-Cs-123  basic  element

55-cesium-123 Atomic Mass: 122.9129902 +- 0.0000131 amu Excess Mass: -81049.124 +- 12.216 keV Binding Energy: 1030792.392 +- 12.217 keV Beta Decay Energy: B- -5458.000 +- 298.000 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: 5.87 min Mode of decay: Electron capture to Xe-123 Decay energy: 4.200 MeV Meta state at 0.157 Mev Spin: 11/2)- Half life: 1.64 s Mode of decay: IT Decay energy: 0.157 MeV Possible parent nuclides: Electron capture from Ba-123 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 5.8 m 1/2+ +1.377(7) [133Cs] ABLS NP A468 1 (87) +1.39(2) [133Cs] AB NP A292 144 (77) N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.