37-Rb-99



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      (5/2+)                
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)
     98.945028735 ± 0.000120023 (amu)  [mass excess = -51205.403 ± 111.802 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     11306.539 ± 111.760 (keV) 
Strong Gamma-rays from Decay of Rb- 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 
  ----------------------------------------------------------
        144.6             8.59        B-,N
        289.4             2.58        B-,N
       1079.8             0.86        B-,N
  ----------------------------------------------------------
         90.8          *100.           B- 
        125.2          * 40.           B- 
       1071.6          * 26.           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-           54 MS 4          
       B-N          50.3 MS 7        
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)
    -----------------------------------------------------------
     Rb- 99    U-235   Thermal   4.668320e-07   2.987720e-07 
     Rb- 99    U-235   Fast      9.087730e-07   5.816140e-07 
     Rb- 99    U-235   High      3.380180e-06   2.163310e-06 
     Rb- 99    U-238   Fast      1.692690e-04   1.083320e-04 
     Rb- 99    U-238   High      1.435890e-04   9.189650e-05 
     Rb- 99   Pu-239   Thermal   3.666120e-07   2.346320e-07 
     Rb- 99   Pu-239   Fast      4.650090e-07   2.976060e-07 
     Rb- 99   Pu-239   High      2.319720e-06   1.484620e-06 
     Rb- 99   Pu-241   Thermal   9.463690e-07   6.056760e-07 
     Rb- 99   Pu-241   Fast      1.556760e-06   9.963240e-07 
    -----------------------------------------------------------
    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)
    -----------------------------------------------------------
     Rb- 99    U-235   Thermal   4.668440e-07   2.987810e-07 
     Rb- 99    U-235   Fast      9.088020e-07   5.816340e-07 
     Rb- 99    U-235   High      3.381600e-06   2.161020e-06 
     Rb- 99    U-238   Fast      1.694630e-04   1.084160e-04 
     Rb- 99    U-238   High      1.439820e-04   9.204820e-05 
     Rb- 99   Pu-239   Thermal   3.666380e-07   2.346480e-07 
     Rb- 99   Pu-239   Fast      4.650450e-07   2.976290e-07 
     Rb- 99   Pu-239   High      2.321860e-06   1.485030e-06 
     Rb- 99   Pu-241   Thermal   9.464030e-07   6.055990e-07 
     Rb- 99   Pu-241   Fast      1.556830e-06   9.963700e-07 
    -----------------------------------------------------------
    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