Abstract
We report the results on the electromagnetic dissociation of 14.5A GeV28Si and 200A GeV16O projectiles in nuclear emulsion. The overall charge changing production cross sections are determined experimentally and are found to agree reasonably well with those computed theoretically. The relative rate as a function of decay energy for various reaction channels are parameterized in terms of an exponential function. Majority of the events in the most prominent decay modes can be attributed to the excitation of giant dipole resonances. Multiplicity distributions of α particles emerged from nuclear as well as electromagnetic interactions are also investigated.
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We are thankful to Dr. D. Beavis, BNL for his help in exposure and to Prof. G. Romano, CERN for the development of our emulsion stack and to Mr. Tetsuo Kurokawa for the scanning work.
This work was supported by the Grant No. DE-FGO2-90ER40566.