64-Gd-161



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      5/2-                  
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)
     160.929677476 ± 0.000002130 (amu)  [mass excess = -65505.009 ± 1.985 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     1955.813 ± 1.441 (keV) 
Strong Gamma-rays from Decay of Gd-161 (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 
  ----------------------------------------------------------
        102.31           13.87         B- 
        314.92           22.69         B- 
        360.94           60.05         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-           3.66 M 5         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Gd-160 (Z= 64, A=160), MT=102 (n,γ)
     Dy-163 (Z= 66, A=163), MT=106 (n,3He)
     Dy-164 (Z= 66, A=164), MT=107 (n,α)

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-161    U-235   Thermal   1.108230e-07   7.092710e-08 
     Gd-161    U-235   Fast      2.255340e-07   1.443420e-07 
     Gd-161    U-235   High      2.136930e-05   1.367640e-05 
     Gd-161    U-238   Fast      1.060400e-07   6.786530e-08 
     Gd-161    U-238   High      4.214590e-06   2.697340e-06 
     Gd-161   Pu-239   Thermal   1.254800e-05   8.030730e-06 
     Gd-161   Pu-239   Fast      2.771550e-05   1.773790e-05 
     Gd-161   Pu-239   High      1.000650e-04   6.404150e-05 
     Gd-161   Pu-241   Thermal   3.150510e-06   2.016330e-06 
     Gd-161   Pu-241   Fast      2.088430e-05   1.336590e-05 
    -----------------------------------------------------------
    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-161    U-235   Thermal   8.510510e-07   6.816100e-08 
     Gd-161    U-235   Fast      3.324570e-06   3.663370e-07 
     Gd-161    U-235   High      5.035350e-05   8.045790e-06 
     Gd-161    U-238   Fast      1.215790e-05   7.290470e-07 
     Gd-161    U-238   High      8.474090e-05   6.772630e-06 
     Gd-161   Pu-239   Thermal   4.811650e-05   5.294250e-06 
     Gd-161   Pu-239   Fast      8.569720e-05   6.856690e-06 
     Gd-161   Pu-239   High      1.533520e-04   6.896710e-05 
     Gd-161   Pu-241   Thermal   8.469420e-05   6.773630e-06 
     Gd-161   Pu-241   Fast      2.337720e-04   1.052730e-04 
    -----------------------------------------------------------
    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