56-Ba-137
 basic
 fission yield
 n-XS summary
 XS graphs

 element
56-barium-137

  • Atomic Mass: 136.9058214 +- 0.0000032 amu
  • Excess Mass: -87726.774 +- 2.980 keV
  • Binding Energy: 1149686.208 +- 2.986 keV
  • Beta Decay Energy: B- -600.107 +- 47.771 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.
  • Atomic Percent Abundance: 11.23%
  • Spin: 3/2+
  • Stable Isotope
    Meta state at 0.661 Mev
  • Spin: 11/2-
  • Half life: 2.552 min
  • Mode of decay: IT
    • Decay energy: 0.662 MeV

  • Possible parent nuclides:
    Beta from Cs-137
    Electron capture from La-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
0stable3/2+ +0.93737(2) OPZP 249 205 (72)
0.93734(2) [135Ba]NZP A288 11 (78)
+0.245(4) st RZP A329 407 (88)
+0.23(3) st "OL, R"NP A403 234 (83)/ZP A277 107(76)
0.246(2) RPR A33 2117 (86)
0.23(2) CFBLSPR A33 2117 (86)
0.34(4) ABLSZP A290 231 (79)
0.35(8) ABLRFSZP A306 195 (82)
6622.55 m11/2- -0.99(3) "[135,137Ba]""ABLRFS, R"NP A403 234 (83)
+0.78(9) "[135,137Ba]""ABLRFS, R"NP A403 234 (83)
N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published.  2000 Courtesy of T. Burrows at BNL/NNDC.