68-Er-172



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      0+                    
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)
     171.939361858 ± 0.000004731 (amu)  [mass excess = -56484.065 ± 4.407 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     890.823 ± 4.544 (keV) 
Strong Gamma-rays from Decay of Er-172 (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 
  ----------------------------------------------------------
         68.11            3.29         B- 
        407.34           42.1          B- 
        610.06           44.2          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-           49.3 H 5         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Yb-174 (Z= 70, A=174), MT=106 (n,3He)
     Yb-176 (Z= 70, A=176), 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)
    -----------------------------------------------------------
     Er-172    U-235   Thermal   2.196500e-12   1.405760e-12 
     Er-172    U-235   Fast      2.704420e-12   1.730820e-12 
     Er-172    U-235   High      7.970930e-08   5.101390e-08 
     Er-172    U-238   Fast      1.620600e-09   1.037190e-09 
     Er-172    U-238   High      1.171270e-08   7.496160e-09 
     Er-172   Pu-239   Thermal   1.909700e-10   1.222200e-10 
     Er-172   Pu-239   Fast      3.649410e-09   2.335620e-09 
     Er-172   Pu-239   High      1.010660e-07   6.468190e-08 
     Er-172   Pu-241   Thermal   3.470560e-11   2.221160e-11 
     Er-172   Pu-241   Fast      2.618030e-09   1.675540e-09 
    -----------------------------------------------------------
    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)
    -----------------------------------------------------------
     Er-172    U-235   Thermal   7.658310e-12   3.455820e-12 
     Er-172    U-235   Fast      1.918570e-11   8.639940e-12 
     Er-172    U-235   High      1.547780e-07   2.479800e-08 
     Er-172    U-238   Fast      1.066410e-07   3.424210e-08 
     Er-172    U-238   High      2.127420e-07   6.784430e-08 
     Er-172   Pu-239   Thermal   4.885310e-10   3.126590e-10 
     Er-172   Pu-239   Fast      7.516610e-09   4.806320e-09 
     Er-172   Pu-239   High      1.383710e-07   8.832080e-08 
     Er-172   Pu-241   Thermal   7.312770e-10   3.289500e-10 
     Er-172   Pu-241   Fast      1.652720e-08   7.425050e-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