Level energy(keV)   Spin & Parity       
       ground state      1/2-                  
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)
     186.955747422 ± 0.000001609 (amu)  [mass excess = -41221.010 ± 1.500 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     -1671.638 ± 27.985 (keV) 
Cross Sections (taken from JENDL-4.0)
     Table of cross sections, Os-187.
     Figures of cross sections, Os-187:  type-1:  type-2:  type-3.
       type-1: total, elastic and inelastic scattering, capture and fision cross sections
       type-2: same as type-1 but cross sections are averaged in 70 energy group intervals
       type-3: threshold reaction cross sections
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Os-186 (Z= 76, A=186), MT=102 (n,γ)
     Os-187 (Z= 76, A=187), MT=  2 (Elastic scattering)
     Os-187 (Z= 76, A=187), MT=  4 (Inelastic scattering)
     Os-188 (Z= 76, A=188), MT= 16 (n,2n)
     Os-189 (Z= 76, A=189), MT= 17 (n,3n)