53-I-139



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      (7/2+)                
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)
     138.926506206 ± 0.000031000 (amu)  [mass excess = -68459.027 ± 28.876 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     7185.548 ± 28.956 (keV) 
Strong Gamma-rays from Decay of I-139 (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 
  ----------------------------------------------------------
        527.7             8.26         B- 
        536.6             5.53         B- 
        571.2             8.09         B- 
        483.6             1.71        B-,N
        588.8             5.67        B-,N
        875.2             0.46        B-,N
  ----------------------------------------------------------
     *: 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-           2.280 S 11       
       B-N          2.280 S 11       
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0 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)
    -----------------------------------------------------------
      I-139    U-235   Thermal   7.702570e-03   6.162060e-04 
      I-139    U-235   Fast      4.595260e-03   3.676210e-04 
      I-139    U-235   High      1.963610e-03   1.256710e-03 
      I-139    U-238   Fast      2.056360e-02   6.580370e-03 
      I-139    U-238   High      8.881140e-03   5.683930e-03 
      I-139   Pu-239   Thermal   3.187500e-03   7.331250e-04 
      I-139   Pu-239   Fast      1.930250e-03   1.235360e-03 
      I-139   Pu-239   High      6.367730e-04   4.075340e-04 
      I-139   Pu-241   Thermal   8.889140e-03   9.778050e-04 
      I-139   Pu-241   Fast      8.250530e-03   5.280340e-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)
    -----------------------------------------------------------
      I-139    U-235   Thermal   7.777840e-03   6.220550e-04 
      I-139    U-235   Fast      4.689820e-03   3.756250e-04 
      I-139    U-235   High      1.984980e-03   1.267890e-03 
      I-139    U-238   Fast      2.174140e-02   4.984990e-03 
      I-139    U-238   High      9.170570e-03   5.853080e-03 
      I-139   Pu-239   Thermal   3.195410e-03   7.349540e-04 
      I-139   Pu-239   Fast      1.942830e-03   1.243210e-03 
      I-139   Pu-239   High      6.417570e-04   4.103050e-04 
      I-139   Pu-241   Thermal   9.070760e-03   7.249420e-04 
      I-139   Pu-241   Fast      8.404170e-03   3.781410e-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