93-Np-233


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) 
     233.040740989 ± 0.000054747 (amu)  [mass excess = 37949.987 ± 50.997 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012) 
     -2102.128 ± 71.649 (keV)
Strong Gamma-rays from Decay of Np-233 (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 
  ----------------------------------------------------------
        312.1             0.7          EC 
        506.5             0.15         EC 
        546.9             0.28         EC 
  ----------------------------------------------------------
     *: 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 
       EC           36.2 M 1
Evaluated Data Libraries 
     Links to the libraries.

Parent Nuclides by Reactions in JENDL-4.0 
     Np-234 (Z= 93, A=234), MT= 16 (n,2n)
     Np-235 (Z= 93, A=235), MT= 17 (n,3n)
     Np-236 (Z= 93, A=236), MT= 37 (n,4n)