53-I-126



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      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)
     125.905623329 ± 0.000004090 (amu)  [mass excess = -87911.302 ± 3.810 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     1234.264 ± 5.230 (keV) 
Strong Gamma-rays from Decay of I-126 (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 
  ----------------------------------------------------------
        388.63           35.57         B- 
        491.24            2.88         B- 
        879.88            0.74         B- 
        666.33           32.88         EC 
        753.82            4.15         EC 
       1420.19            0.3          EC 
  ----------------------------------------------------------
     *: 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-           12.93 D 5        
       EC           12.93 D 5        
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     I -127 (Z= 53, A=127), MT= 16 (n,2n)
     Xe-126 (Z= 54, A=126), MT=103 (n,p)
     Xe-128 (Z= 54, A=128), MT= 32 (n,nd)
     Xe-128 (Z= 54, A=128), MT=105 (n,t)

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-126    U-235   Thermal   1.697300e-12   1.086270e-12 
      I-126    U-235   High      5.928130e-08   3.794000e-08 
      I-126    U-238   High      7.938640e-11   5.080730e-11 
      I-126   Pu-239   High      2.131380e-06   1.364080e-06 
    -----------------------------------------------------------
    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-126    U-235   Thermal   1.697300e-12   1.086270e-12 
      I-126    U-235   High      5.928130e-08   3.788380e-08 
      I-126    U-238   High      7.938640e-11   5.075230e-11 
      I-126   Pu-239   High      2.131380e-06   1.363200e-06 
    -----------------------------------------------------------
    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