91-Pa-228


Spin 
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      3+
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) 
     228.031051673 ± 0.000004717 (amu)  [mass excess = 28924.447 ± 4.394 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012) 
     -297.909 ± 14.934 (keV)
Strong Gamma-rays from Decay of Pa-228 (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 
  ----------------------------------------------------------
        463.02           20.89         EC 
        911.20           23.03         EC 
        968.98           13.89         EC 
         29.8             0.06       Alpha
         43.3             0.05       Alpha
        308.0             0.08       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            22 H 1           
       EC           22 H 1
Evaluated Data Libraries 
     Links to the libraries.

Parent Nuclides by Reactions in JENDL-4.0 
     Pa-229 (Z= 91, A=229), MT= 16 (n,2n)
     Pa-230 (Z= 91, A=230), MT= 17 (n,3n)