33-As-77



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)
     76.920647563 ± 0.000001842 (amu)  [mass excess = -73916.319 ± 1.716 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     683.166 ± 1.716 (keV) 
Strong Gamma-rays from Decay of As- 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 
  ----------------------------------------------------------
        239.01            1.59         B- 
        249.81            0.39         B- 
        520.65            0.56         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-           38.83 H 5        
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Se- 77 (Z= 34, A= 77), MT=103 (n,p)
     Se- 78 (Z= 34, A= 78), MT= 28 (n,np)
     Se- 78 (Z= 34, A= 78), MT=104 (n,d)
     Se- 79 (Z= 34, A= 79), MT= 32 (n,nd)
     Se- 79 (Z= 34, A= 79), MT=105 (n,t)
     Br- 79 (Z= 35, A= 79), MT=106 (n,3He)
     Br- 81 (Z= 35, A= 81), MT= 22 (n,nα)

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- 77    U-235   Thermal   4.303150e-08   2.754020e-08 
     As- 77    U-235   Fast      1.896080e-07   1.213500e-07 
     As- 77    U-235   High      3.685050e-06   2.358430e-06 
     As- 77    U-238   Fast      4.351620e-09   2.785040e-09 
     As- 77    U-238   High      5.255720e-07   3.363660e-07 
     As- 77   Pu-239   Thermal   9.888440e-07   6.328600e-07 
     As- 77   Pu-239   Fast      9.438470e-07   6.040620e-07 
     As- 77   Pu-239   High      4.132680e-06   2.644920e-06 
     As- 77   Pu-241   Thermal   9.611550e-08   6.151400e-08 
     As- 77   Pu-241   Fast      1.528850e-07   9.784640e-08 
    -----------------------------------------------------------
    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- 77    U-235   Thermal   7.947630e-05   8.757420e-06 
     As- 77    U-235   Fast      3.174370e-04   7.316060e-05 
     As- 77    U-235   High      6.668490e-04   1.065420e-04 
     As- 77    U-238   Fast      3.303440e-05   5.281690e-06 
     As- 77    U-238   High      3.132800e-04   3.442420e-05 
     As- 77   Pu-239   Thermal   7.233230e-05   7.958420e-06 
     As- 77   Pu-239   Fast      1.269110e-04   1.015340e-05 
     As- 77   Pu-239   High      2.371470e-04   5.451020e-05 
     As- 77   Pu-241   Thermal   1.895050e-05   6.067210e-06 
     As- 77   Pu-241   Fast      9.686170e-05   2.229400e-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