63-Eu-140
 basic

 element
63-europium-140

  • Atomic Mass: 139.9280839 +- 0.0000560 amu
  • Excess Mass: -66989.386 +- 52.174 keV
  • Binding Energy: 1147686.315 +- 52.174 keV
  • Beta Decay Energy: B- -5460.000 +- 400.000 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+
  • Half life: 1.51 s
  • Mode of decay: Electron capture to Sm-140
    • Decay energy: 8.400 MeV

    Meta state at 0.185 Mev
  • Spin: (5-)
  • Half life: 125 ms
  • Mode of decay: IT
    • Decay energy: 0.185 MeV
  • Mode of decay: Electron capture to Sm-140
    • Branch ratio: <1.00 %
    • Decay energy: 8.585 MeV

  • Possible parent nuclides:
    Electron capture from Gd-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
0 + x1.54 s1(+) +1.365(13) [151Eu]CFBLSZP A321 35 (85)
+0.31(4) [153Eu]CFBLSZP A321 35 (85)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.