Abstract
Abstract Cu and Pb targets were irradiated by 3.7 GeV/n 12 C ions and 1.8 GeV/n ions respectively at the Dubna (USSR) and Berkeley (USA) accelerators. CR 39 track detectors were placed up- and downstream of 2.0 cm Cu and 0.8 cm Pb foils. Important attenuation of the number of beam particles passing through the targets was observed allowing for direct total reaction cross section measurements. Good agreement with theoretically calculated cross section was found.
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