63-Eu-139
 basic

 element
63-europium-139

  • Atomic Mass: 138.9298380 +- 0.0001620 amu #
  • Excess Mass: -65355.000 +- 151.000 keV #
  • Binding Energy: 1137981.000 +- 151.000 keV #
  • Beta Decay Energy: B- -7677.000 +- 525.000 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: 11/2)-
  • Half life: 17.9 s
  • Mode of decay: Electron capture to Sm-139
    • Decay energy: 6.700 MeV

  • Possible parent nuclides:
    EC + P from Tb-140
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)T1/2Spin    m(nm)    Q(b)    Ref. Std.MethodReference
017.9s(11/2-) 6.1(8) [142Eu]NO/SHFI 75 471 (92)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.