Negative particle production at the CERN intersecting storage rings

Preliminary results on the production of negative particles in inclusive reactions at intermediate angles (80-200 mrad) at the CERN ISR are reported. Pion production, is still the dominant process; within experimental errors, scaling holds for negative pions or alternatively a limiting distribution is reached at relatively low energies. However the antiproton production cross-sections are apparently larger than smaller energies. (14 refs).