95-Am-239



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)
     239.053024699 ± 0.000002596 (amu)  [mass excess = 49392.190 ± 2.419 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     -1756.255 ± 54.058 (keV) 
Strong Gamma-rays from Decay of Am-239 (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 
  ----------------------------------------------------------
        209.8             3.5          EC 
        228.18           11.3          EC 
        277.60           15.           EC 
         48.8           5.E-03       Alpha
  ----------------------------------------------------------
     *: 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 
       A            11.9 H 1         
       EC           11.9 H 1         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Am-240 (Z= 95, A=240), MT= 16 (n,2n)
     Am-241 (Z= 95, A=241), MT= 17 (n,3n)
     Am-242 (Z= 95, A=242), MT= 37 (n,4n)
     Am-242 (Z= 95, A=242), MT= 37 (n,4n)