91-Pa-227



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)
     227.028805351 ± 0.000008008 (amu)  [mass excess = 26832.012 ± 7.460 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     -2190.335 ± 18.379 (keV) 
Strong Gamma-rays from Decay of Pa-227 (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 
  ----------------------------------------------------------
         64.62            6.12       Alpha
         67.6             0.42       Alpha
        110.05            1.24       Alpha
         56.45         *  5.55         EC 
        151.1          *  5.7          EC 
        204.3          * 15.           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 
       A            38.3 M 3         
       EC           38.3 M 3         
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Pa-229 (Z= 91, A=229), MT= 17 (n,3n)
     Pa-230 (Z= 91, A=230), MT= 37 (n,4n)