38-Sr-99



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)
     98.932890666 ± 0.000003824 (amu)  [mass excess = -62511.942 ± 3.562 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     8143.760 ± 7.641 (keV) 
Strong Gamma-rays from Decay of Sr- 99 (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 
  ----------------------------------------------------------
        125.12           16.1          B- 
        536.12           14.01         B- 
       1198.12            9.18         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-           270 MS 10        
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0 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)
    -----------------------------------------------------------
     Sr- 99    U-235   Thermal   1.329560e-03   1.462510e-04 
     Sr- 99    U-235   Fast      2.153930e-03   1.378520e-03 
     Sr- 99    U-235   High      7.530950e-04   4.819810e-04 
     Sr- 99    U-238   Fast      9.775340e-03   6.256220e-03 
     Sr- 99    U-238   High      4.325010e-03   2.768010e-03 
     Sr- 99   Pu-239   Thermal   3.746450e-04   2.397720e-04 
     Sr- 99   Pu-239   Fast      4.858160e-04   3.109220e-04 
     Sr- 99   Pu-239   High      3.728620e-04   2.386320e-04 
     Sr- 99   Pu-241   Thermal   1.560790e-03   9.989090e-04 
     Sr- 99   Pu-241   Fast      2.153180e-03   1.378030e-03 
    -----------------------------------------------------------
    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)
    -----------------------------------------------------------
     Sr- 99    U-235   Thermal   1.350790e-03   1.477180e-04 
     Sr- 99    U-235   Fast      2.154730e-03   1.379030e-03 
     Sr- 99    U-235   High      7.560490e-04   4.834270e-04 
     Sr- 99    U-238   Fast      9.923350e-03   4.473560e-03 
     Sr- 99    U-238   High      4.450480e-03   2.848310e-03 
     Sr- 99   Pu-239   Thermal   3.749640e-04   2.399780e-04 
     Sr- 99   Pu-239   Fast      4.862210e-04   3.111820e-04 
     Sr- 99   Pu-239   High      3.748890e-04   2.399290e-04 
     Sr- 99   Pu-241   Thermal   1.561630e-03   9.993530e-04 
     Sr- 99   Pu-241   Fast      2.154550e-03   1.378910e-03 
    -----------------------------------------------------------
    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