55-Cs-140



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      1-                    
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)
     139.917283063 ± 0.000008804 (amu)  [mass excess = -77050.330 ± 8.202 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     6219.896 ± 9.886 (keV) 
Strong Gamma-rays from Decay of Cs-140 (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 
  ----------------------------------------------------------
        602.25           53.3          B- 
        908.25            8.69         B- 
       1200.3             4.79         B- 
  ----------------------------------------------------------
     *: 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 
       B-           63.7 S 3         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Ba-140 (Z= 56, A=140), MT=103 (n,p)

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)
    -----------------------------------------------------------
     Cs-140    U-235   Thermal   2.066740e-02   5.786870e-04 
     Cs-140    U-235   Fast      3.040660e-02   1.824400e-03 
     Cs-140    U-235   High      2.607590e-02   8.344300e-03 
     Cs-140    U-238   Fast      8.875890e-03   2.041460e-03 
     Cs-140    U-238   High      1.732250e-02   5.543210e-03 
     Cs-140   Pu-239   Thermal   2.276250e-02   3.642010e-03 
     Cs-140   Pu-239   Fast      2.755620e-02   8.817990e-03 
     Cs-140   Pu-239   High      1.917040e-02   6.134520e-03 
     Cs-140   Pu-241   Thermal   2.291040e-02   7.331330e-03 
     Cs-140   Pu-241   Fast      1.807240e-02   5.783180e-03 
    -----------------------------------------------------------
    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)
    -----------------------------------------------------------
     Cs-140    U-235   Thermal   5.714480e-02   8.072030e-04 
     Cs-140    U-235   Fast      5.728300e-02   1.611610e-03 
     Cs-140    U-235   High      3.543550e-02   8.138270e-03 
     Cs-140    U-238   Fast      5.787250e-02   1.157290e-03 
     Cs-140    U-238   High      4.472190e-02   7.148440e-03 
     Cs-140   Pu-239   Thermal   3.872190e-02   3.098240e-03 
     Cs-140   Pu-239   Fast      4.404390e-02   7.048040e-03 
     Cs-140   Pu-239   High      2.331480e-02   5.358950e-03 
     Cs-140   Pu-241   Thermal   5.589870e-02   6.148000e-03 
     Cs-140   Pu-241   Fast      5.128310e-02   5.645610e-03 
    -----------------------------------------------------------
    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