62-Sm-139
 basic

 element
62-samarium-139

  • Atomic Mass: 138.9223020 +- 0.0000160 amu
  • Excess Mass: -72375.210 +- 14.904 keV
  • Binding Energy: 1145783.169 +- 14.905 keV
  • Beta Decay Energy: B- -7020.000 +- 150.000 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: 2.57 min
  • Mode of decay: Electron capture to Pm-139
    • Decay energy: 5.460 MeV

    Meta state at 0.458 Mev
  • Spin: 11/2)-
  • Half life: 10.7 s
  • Mode of decay: IT
    • Branch ratio: 93.70 %
    • Decay energy: 0.458 MeV
  • Mode of decay: Electron capture to Pm-139
    • Branch ratio: 6.30 %
    • Decay energy: 5.918 MeV

  • Possible parent nuclides:
    Electron capture from Eu-139
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
02.57 m1/2+ -0.53(2) "[145,7,9Sm]"LRIMSJP G18 1177 (92)
45710.7 s11/2- 1.1(2) [141Sm176]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.