Résumé : Average prescission Mpren and postscission Mpostn neutron multiplicities as well as average γ-ray multiplicity 〈Mγ〉, average energy 〈Eγ〉 emitted by γ-rays as a function of mass and total kinetic energy (TKE) of fission fragments were measured in proton induced reactions p+242 Pu→243Am, p+238U→239Np at proton energy Ep=13, 20 and 55 MeV. © 2004 Elsevier B.V. All rights reserved.