74-W-181


Spin 
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      9/2+
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) 
     180.948197783 ± 0.000005081 (amu)  [mass excess = -48253.454 ± 4.734 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012) 
     -1732.476 ± 13.400 (keV)
Strong Gamma-rays from Decay of W-181 (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 
  ----------------------------------------------------------
          6.24            1.03         EC 
        136.28            0.03         EC 
        152.32            0.08         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           121.2 D 2
Evaluated Data Libraries 
     Links to the libraries.

Parent Nuclides by Reactions in JENDL-4.0 
     W -180 (Z= 74, A=180), MT=102 (n,γ)
     W -182 (Z= 74, A=182), MT= 16 (n,2n)
     W -183 (Z= 74, A=183), MT= 17 (n,3n)
     Os-184 (Z= 76, A=184), MT=107 (n,α)
     Os-186 (Z= 76, A=186), MT= 24 (n,2nα)