64-Gd-166



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)
     165.941460 ± 0.000640 (amu)  [mass excess = -54530 ± 596 (keV) ]
 	[These values were derived from systematical trend]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     3354 ± 600 (keV) [derived from systematical trend] 
Strong Gamma-rays from Decay of Gd-166 (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 
  ----------------------------------------------------------
        536.0          * 37.           B- 
        975.5          * 84.           B- 
       1015.5          *100.           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-           4.8 S 10         
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)
    -----------------------------------------------------------
     Gd-166    U-235   Thermal   1.657360e-09   1.060710e-09 
     Gd-166    U-235   Fast      5.768090e-09   3.691580e-09 
     Gd-166    U-235   High      2.753780e-07   1.762420e-07 
     Gd-166    U-238   Fast      3.821420e-07   2.445720e-07 
     Gd-166    U-238   High      3.273560e-06   2.095080e-06 
     Gd-166   Pu-239   Thermal   1.589750e-07   1.017440e-07 
     Gd-166   Pu-239   Fast      1.149810e-06   7.358810e-07 
     Gd-166   Pu-239   High      1.380900e-07   8.837730e-08 
     Gd-166   Pu-241   Thermal   2.480400e-09   1.587460e-09 
     Gd-166   Pu-241   Fast      3.067690e-06   1.963320e-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)
    -----------------------------------------------------------
     Gd-166    U-235   Thermal   1.682380e-09   1.076720e-09 
     Gd-166    U-235   Fast      5.942700e-09   3.803330e-09 
     Gd-166    U-235   High      2.813790e-07   1.798200e-07 
     Gd-166    U-238   Fast      4.655230e-07   2.979350e-07 
     Gd-166    U-238   High      3.783260e-06   2.419210e-06 
     Gd-166   Pu-239   Thermal   1.613690e-07   1.030400e-07 
     Gd-166   Pu-239   Fast      1.162530e-06   7.423910e-07 
     Gd-166   Pu-239   High      1.396630e-07   8.938410e-08 
     Gd-166   Pu-241   Thermal   2.699980e-09   1.727990e-09 
     Gd-166   Pu-241   Fast      3.183130e-06   2.037200e-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