33-As-81



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)
     80.922132280 ± 0.000002863 (amu)  [mass excess = -72533.314 ± 2.667 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     3855.693 ± 2.845 (keV) 
Strong Gamma-rays from Decay of As- 81 (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 
  ----------------------------------------------------------
        467.70           20.           B- 
        491.20            8.5          B- 
        521.10            1.4          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-           33.3 S 8         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Se- 82 (Z= 34, A= 82), MT= 28 (n,np)
     Se- 82 (Z= 34, A= 82), MT=104 (n,d)

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- 81    U-235   Thermal   6.081220e-04   4.864980e-05 
     As- 81    U-235   Fast      6.814030e-04   4.360980e-04 
     As- 81    U-235   High      1.677590e-03   1.073650e-03 
     As- 81    U-238   Fast      1.388520e-04   8.886520e-05 
     As- 81    U-238   High      1.102770e-03   7.057730e-04 
     As- 81   Pu-239   Thermal   1.025640e-03   6.564090e-04 
     As- 81   Pu-239   Fast      7.044960e-04   4.508770e-04 
     As- 81   Pu-239   High      1.310050e-03   8.384320e-04 
     As- 81   Pu-241   Thermal   2.948680e-04   1.887160e-04 
     As- 81   Pu-241   Fast      3.267840e-04   2.091420e-04 
    -----------------------------------------------------------
    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- 81    U-235   Thermal   1.821040e-03   1.568060e-04 
     As- 81    U-235   Fast      2.101530e-03   7.280860e-04 
     As- 81    U-235   High      3.115450e-03   1.041720e-03 
     As- 81    U-238   Fast      7.925570e-04   3.923080e-04 
     As- 81    U-238   High      3.080800e-03   1.058800e-03 
     As- 81   Pu-239   Thermal   1.520360e-03   5.138710e-04 
     As- 81   Pu-239   Fast      1.232140e-03   5.879230e-04 
     As- 81   Pu-239   High      2.364600e-03   1.114510e-03 
     As- 81   Pu-241   Thermal   5.489830e-04   2.673960e-04 
     As- 81   Pu-241   Fast      8.417880e-04   4.092630e-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