Level energy(keV)   Spin & Parity       
       ground state      7/2+                  
       1.59700E+02       1/2-                  
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)
     76.923549843 ± 0.000000057 (amu)  [mass excess = -71212.862 ± 0.053 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     2703.457 ± 1.717 (keV) 
Strong Gamma-rays from Decay of Ge- 77 (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 
        194.8             0.41         B- 
        215.53           21.38         B- 
       1604.65            0.21         B- 
        159.7            10.33         IT 
        211.03           30.83         B- 
        215.50           28.62         B- 
        264.44           53.9          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-           11.30 H 1        
       B-           52.9 S 6         
       IT           52.9 S 6         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Ge- 76 (Z= 32, A= 76), MT=102 (n,γ)
     Se- 79 (Z= 34, A= 79), MT=106 (n,3He)
     Se- 80 (Z= 34, A= 80), 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)
     Ge- 77    U-235   Thermal   5.930370e-06   3.795440e-06 
     Ge- 77    U-235   Fast      3.178340e-05   2.034140e-05 
     Ge- 77    U-235   High      9.999680e-05   6.399770e-05 
     Ge- 77    U-238   Fast      1.021740e-06   6.539110e-07 
     Ge- 77    U-238   High      2.854250e-05   1.826730e-05 
     Ge- 77   Pu-239   Thermal   2.313660e-05   1.480740e-05 
     Ge- 77   Pu-239   Fast      3.312250e-05   2.119840e-05 
     Ge- 77   Pu-239   High      5.620100e-05   3.596860e-05 
     Ge- 77   Pu-241   Thermal   4.366050e-06   2.794270e-06 
     Ge- 77   Pu-241   Fast      1.311430e-05   8.393150e-06 
     Ge- 77m   U-235   Thermal   9.097350e-07   5.822300e-07 
     Ge- 77m   U-235   Fast      4.252200e-06   2.721410e-06 
     Ge- 77m   U-235   High      8.342100e-06   5.338940e-06 
     Ge- 77m   U-238   Fast      1.366950e-07   8.748500e-08 
     Ge- 77m   U-238   High      2.381120e-06   1.523920e-06 
     Ge- 77m  Pu-239   Thermal   3.549210e-06   2.271490e-06 
     Ge- 77m  Pu-239   Fast      4.431360e-06   2.836070e-06 
     Ge- 77m  Pu-239   High      4.688490e-06   3.000630e-06 
     Ge- 77m  Pu-241   Thermal   6.697630e-07   4.286490e-07 
     Ge- 77m  Pu-241   Fast      1.754520e-06   1.122890e-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)
     Ge- 77    U-235   Thermal   1.989590e-05   1.234360e-05 
     Ge- 77    U-235   Fast      8.602150e-05   3.870960e-05 
     Ge- 77    U-235   High      2.069990e-04   9.314930e-05 
     Ge- 77    U-238   Fast      7.103310e-06   2.273050e-06 
     Ge- 77    U-238   High      8.254290e-05   3.714440e-05 
     Ge- 77   Pu-239   Thermal   3.229590e-05   2.066940e-05 
     Ge- 77   Pu-239   Fast      5.076290e-05   3.248830e-05 
     Ge- 77   Pu-239   High      8.979550e-05   5.746910e-05 
     Ge- 77   Pu-241   Thermal   7.118830e-06   4.556060e-06 
     Ge- 77   Pu-241   Fast      2.899730e-05   1.304880e-05 
     Ge- 77m   U-235   Thermal   7.350290e-05   1.118930e-05 
     Ge- 77m   U-235   Fast      2.854640e-04   1.648130e-04 
     Ge- 77m   U-235   High      5.631670e-04   3.244030e-04 
     Ge- 77m   U-238   Fast      3.200830e-05   1.324470e-05 
     Ge- 77m   U-238   High      2.842120e-04   1.176030e-04 
     Ge- 77m  Pu-239   Thermal   4.820690e-05   2.794640e-05 
     Ge- 77m  Pu-239   Fast      9.284420e-05   5.369150e-05 
     Ge- 77m  Pu-239   High      1.768130e-04   1.020100e-04 
     Ge- 77m  Pu-241   Thermal   1.448830e-05   8.378970e-06 
     Ge- 77m  Pu-241   Fast      8.359450e-05   4.824780e-05 
    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