99-Es-249



Spin
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      (7/2+)                
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)
     249.076411 ± 0.000032 (amu)  [mass excess = 71177 ± 30 (keV) ]
 	[These values were derived from systematical trend]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     -2344 ± 31 (keV) [derived from systematical trend] 
Strong Gamma-rays from Decay of Es-249 (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 
  ----------------------------------------------------------
        375.1             3.31         EC 
        379.5            40.77         EC 
        813.2             9.24         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            102.2 M 6        
       EC           102.2 M 6        
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Es-251 (Z= 99, A=251), MT= 17 (n,3n)
     Es-252 (Z= 99, A=252), MT= 37 (n,4n)