58-Ce-138



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      0+                    
       2.12917E+03       7-                    
Mass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer Chinese Physics C36 p. 1603-2014, December 2012)
     137.905991089 ± 0.000010612 (amu)  [mass excess = -87568.736 ± 9.886 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     -4437.000 ± 10.000 (keV) 
Strong Gamma-rays from Decay of Ce-138 (Compiled from ENSDF as of March 2011)
  [ Intensities before May 23th of 2013 were values when total intensity of the decay mode was 100(%) and a branching ratio of each decay mode was not multiplied. ]
   γ-ray energy(keV)  Intensity(%)  Decay mode 
  ----------------------------------------------------------
        302.9            84.5          IT 
        789.2            99.66         IT 
       1037.6            99.81         IT 
  ----------------------------------------------------------
     *: relative, ~ approximate, ? calculated or estimatted 
     >: greater than or equal to, <: less than or equal to  
  [ Intensities; total intensity of the nuclide is 100(%). ]
Decay data(Chart of the Nuclides 2014)
     Decay mode     Half-life 
       IT           8.65 MS 20       
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Ce-140 (Z= 58, A=140), MT= 17 (n,3n)
     Pr-141 (Z= 59, A=141), MT= 33 (n,nt)
     Nd-142 (Z= 60, A=142), MT= 22 (n,nα)
     Nd-143 (Z= 60, A=143), MT= 24 (n,2nα)

Fission Yields for Fission Products in JENDL-4.0 Fission Yield Data

   - Neutron-induced Fission Yields (from main actinide nuclides) - Independent Fission Yield -
     Product  Nuclide  Energy   Fission Yield  Uncertainty(1σ)
    -----------------------------------------------------------
     Ce-138    U-235   Thermal   4.742440e-12   3.035170e-12 
     Ce-138    U-235   Fast      1.197530e-12   7.664170e-13 
     Ce-138    U-235   High      5.257210e-09   3.364610e-09 
     Ce-138    U-238   High      3.243530e-12   2.075860e-12 
     Ce-138   Pu-239   Thermal   7.708780e-11   4.933620e-11 
     Ce-138   Pu-239   Fast      6.688910e-11   4.280900e-11 
     Ce-138   Pu-239   High      1.621050e-07   1.037470e-07 
     Ce-138   Pu-241   Thermal   9.681560e-14   6.196200e-14 
     Ce-138   Pu-241   Fast      1.478890e-13   9.464880e-14 
    -----------------------------------------------------------
    Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
   - Neutron-induced Fission Yields (from main actinide nuclides) - Cumulative Fission Yield -
     Product  Nuclide  Energy   Fission Yield  Uncertainty(1σ)
    -----------------------------------------------------------
     Ce-138    U-235   Thermal   1.066830e-07   1.182370e-08 
     Ce-138    U-235   Fast      3.276080e-08   3.654130e-09 
     Ce-138    U-235   High      2.491700e-06   1.446440e-06 
     Ce-138    U-238   Fast      5.915800e-11   6.257710e-12 
     Ce-138    U-238   High      1.460150e-08   8.472760e-09 
     Ce-138   Pu-239   Thermal   2.070200e-07   1.204300e-07 
     Ce-138   Pu-239   Fast      1.811420e-07   1.054310e-07 
     Ce-138   Pu-239   High      2.127320e-05   1.237070e-05 
     Ce-138   Pu-241   Thermal   2.527220e-09   1.466440e-09 
     Ce-138   Pu-241   Fast      2.491390e-09   1.450940e-09 
    -----------------------------------------------------------
    Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
      → Neutron-induced and Spontaneous Fission Yields of all nuclides in JENDL-4.0 Fission Yield Data