Measurement of the average energy and multiplicity of prompt-fission neutrons from 238U(n,f) and 237Np(n,f) from 1 to 200 MeV J. Taieb, T. Granier, T. Ethvignot, M. Devlin, R.C. Haight, R.O. Nelson, J.M. O'Donnell and D. Rochman Published online: 17 June 2008 DOI: 10.1051/ndata:07676