Primary versus secondary gamma intensities in 171Yb(n_th,gamma)
  The two published literature values [Greenwood et al., Nucl. Phys. A252, 260 (1975) and Gelletly et al., J. Phys. G 11, 1055 (1985)] for absolute primary gamma intensities following thermal neutron capture of 171Yb differ in average by a factor of three. We have resolved this conflict in favor of Greenwood et al. by a measurement of primary versus secondary intensities. 
A. Schiller, A. Voinov, E. Algin, L.A. Bernstein, P.E. Garrett, M.   Guttormsen, R.O. Nelson, J. Rekstad and S. Siem