33-As-79



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      3/2-                  
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)
     78.920948423 ± 0.000005782 (amu)  [mass excess = -73636.069 ± 5.386 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     2281.356 ± 5.389 (keV) 
Strong Gamma-rays from Decay of As- 79 (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 
  ----------------------------------------------------------
        231.              --           IT 
        542.              --           IT 
  ----------------------------------------------------------
         95.5             9.28         B- 
        364.5             1.86         B- 
        432.0             1.49         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-           9.01 M 15        
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Se- 79 (Z= 34, A= 79), MT=103 (n,p)
     Se- 80 (Z= 34, A= 80), MT= 28 (n,np)
     Se- 80 (Z= 34, A= 80), MT=104 (n,d)
     Br- 81 (Z= 35, A= 81), MT=106 (n,3He)

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)
    -----------------------------------------------------------
     As- 79    U-235   Thermal   2.652770e-05   1.193750e-05 
     As- 79    U-235   Fast      2.845130e-05   1.820880e-05 
     As- 79    U-235   High      1.654870e-04   1.059110e-04 
     As- 79    U-238   Fast      3.451280e-06   2.208820e-06 
     As- 79    U-238   High      6.178730e-05   3.954390e-05 
     As- 79   Pu-239   Thermal   8.013740e-05   5.128800e-05 
     As- 79   Pu-239   Fast      7.659760e-05   4.902240e-05 
     As- 79   Pu-239   High      1.391400e-04   8.904970e-05 
     As- 79   Pu-241   Thermal   1.534250e-05   9.819180e-06 
     As- 79   Pu-241   Fast      1.831620e-05   1.172240e-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)
    -----------------------------------------------------------
     As- 79    U-235   Thermal   4.465870e-04   3.577730e-05 
     As- 79    U-235   Fast      9.067840e-04   4.087880e-04 
     As- 79    U-235   High      1.678770e-03   7.540850e-04 
     As- 79    U-238   Fast      3.272010e-04   1.470300e-04 
     As- 79    U-238   High      1.334570e-03   5.995190e-04 
     As- 79   Pu-239   Thermal   4.341660e-04   6.947430e-05 
     As- 79   Pu-239   Fast      6.059960e-04   2.727220e-04 
     As- 79   Pu-239   High      8.578150e-04   3.856510e-04 
     As- 79   Pu-241   Thermal   1.494180e-04   6.722540e-05 
     As- 79   Pu-241   Fast      3.583000e-04   1.613210e-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