We investigate the charge changing collisions for O-16 and S-32 beams
at 3.65 GeV/n on several targets, by using Solid State Nuclear Track D
etectors (SSNTD). Track measurements were performed by an automatic me
asurement system. We determined the total charge changing cross sectio
ns and the elemental cross sections for the production of fragments of
charge 9 less than or equal to Z less than or equal to 14. Comparison
with theoretical models as well as with experimental data are given.