57-La-137
 basic
 fission yield
 XS graphs

 element
57-lanthanum-137

  • Atomic Mass: 136.9064657 +- 0.0000513 amu
  • Excess Mass: -87126.667 +- 47.782 keV
  • Binding Energy: 1148303.748 +- 47.783 keV
  • Beta Decay Energy: B- -1222.100 +- 1.600 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: 7/2+
  • Half life: 60000 years
  • Mode of decay: Electron capture to Ba-137
    • Decay energy: 0.600 MeV

  • Possible parent nuclides:
    Electron capture from Ce-137
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
06 x 10*4 y7/2+ +2.695(6) [139La]OZP 254 127 (72)
+0.26(8) st [139La]OZP 254 127 (72)
1089 ns5/2+ +0.26(8) st [137La]MEHFI 4 630 (78)
1870365 ns19/2- +2.34(6) TDPADBAPS 27 728 (82)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.