Experiments performed at Lab. Nat. SATURNE on neutron produced by spallatio
n from proton beams in the range 0.8 - 1.6 GeV are presented. Experimental
data compared with codes show a significant improvement of the recent intra
-nuclear cascade (J. Cugnon). This is also true in the same way for the neu
tron production from thick targets. However the model underestimates the en
ergetic neutrons produced in the backward direction and other quantities as
residual nuclei cross sections are not accurately predicted.