Level energy(keV)   Spin & Parity       
       ground state      7/2+                  
       1.63200E+03       (19/2-)               
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)
     132.907796968 ± 0.000005007 (amu)  [mass excess = -85886.571 ± 4.665 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     1757.000 ± 4.000 (keV) 
Strong Gamma-rays from Decay of I-133 (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 
        529.87           87.           B- 
        875.33            4.51         B- 
       1298.22            2.35         B- 
         73.              3.8          IT 
        647.            100.           IT 
        912.            100.           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 
       B-           20.8 H 1         
       IT           9 S 2            
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     I -135 (Z= 53, A=135), MT= 17 (n,3n)
     Xe-133 (Z= 54, A=133), MT=103 (n,p)
     Xe-134 (Z= 54, A=134), MT= 28 (n,np)
     Xe-134 (Z= 54, A=134), MT=104 (n,d)
     Xe-135 (Z= 54, A=135), MT= 32 (n,nd)
     Xe-135 (Z= 54, A=135), MT=105 (n,t)
     Cs-134 (Z= 55, A=134), MT=111 (n,2p)
     Cs-135 (Z= 55, A=135), MT= 44 (n,n2p)
     Cs-135 (Z= 55, A=135), MT=106 (n,3He)
     Cs-135 (Z= 55, A=135), MT=115 (n,pd)
     Cs-136 (Z= 55, A=136), MT= 34 (n,n3He)
     Cs-136 (Z= 55, A=136), MT=107 (n,α)
     Cs-136 (Z= 55, A=136), MT=116 (n,pt)
     Cs-137 (Z= 55, A=137), MT= 22 (n,nα)

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-133    U-235   Thermal   1.023240e-03   6.548760e-04 
      I-133    U-235   Fast      2.202140e-03   1.409370e-03 
      I-133    U-235   High      7.034630e-03   4.502170e-03 
      I-133    U-238   Fast      1.086540e-03   6.953850e-04 
      I-133    U-238   High      1.985380e-03   1.270640e-03 
      I-133   Pu-239   Thermal   6.876460e-03   4.400930e-03 
      I-133   Pu-239   Fast      7.488810e-03   4.792840e-03 
      I-133   Pu-239   High      8.441540e-03   5.402580e-03 
      I-133   Pu-241   Thermal   1.956840e-04   1.252370e-04 
      I-133   Pu-241   Fast      1.684640e-03   1.078170e-03 
      I-133m   U-235   Thermal   6.244920e-04   3.996750e-04 
      I-133m   U-235   Fast      1.627670e-03   1.041710e-03 
      I-133m   U-235   High      9.556480e-03   6.116150e-03 
      I-133m   U-238   Fast      8.030950e-04   5.139800e-04 
      I-133m   U-238   High      2.697120e-03   1.726150e-03 
      I-133m  Pu-239   Thermal   4.196750e-03   2.685920e-03 
      I-133m  Pu-239   Fast      5.535210e-03   3.542540e-03 
      I-133m  Pu-239   High      1.146780e-02   7.339360e-03 
      I-133m  Pu-241   Thermal   1.194270e-04   7.643320e-05 
      I-133m  Pu-241   Fast      1.245170e-03   7.969070e-04 
    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-133    U-235   Thermal   6.686810e-02   4.279550e-02 
      I-133    U-235   Fast      6.704410e-02   4.290820e-02 
      I-133    U-235   High      5.364420e-02   3.350130e-02 
      I-133    U-238   Fast      6.759150e-02   4.325850e-02 
      I-133    U-238   High      6.006730e-02   3.817410e-02 
      I-133   Pu-239   Thermal   6.972320e-02   4.462290e-02 
      I-133   Pu-239   Fast      6.907850e-02   4.421020e-02 
      I-133   Pu-239   High      4.481040e-02   2.773450e-02 
      I-133   Pu-241   Thermal   6.729690e-02   4.307000e-02 
      I-133   Pu-241   Fast      6.452960e-02   4.129900e-02 
      I-133m   U-235   Thermal   3.646940e-03   2.334040e-03 
      I-133m   U-235   Fast      5.002890e-03   3.201850e-03 
      I-133m   U-235   High      1.189240e-02   6.543640e-03 
      I-133m   U-238   Fast      3.248660e-03   2.079140e-03 
      I-133m   U-238   High      5.390470e-03   3.200470e-03 
      I-133m  Pu-239   Thermal   7.371800e-03   4.158520e-03 
      I-133m  Pu-239   Fast      8.654330e-03   4.719870e-03 
      I-133m  Pu-239   High      1.311540e-02   7.519010e-03 
      I-133m  Pu-241   Thermal   3.121230e-03   1.997580e-03 
      I-133m  Pu-241   Fast      4.116380e-03   2.634470e-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