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Fission induced by energetic negative pions in gold and bismuth has been studied experimentally and theoretically. CR-39 dielectric track detectors in 4π-geometry were used to determine experimental cross sections, and the computer code CEM95 has been used for theoretical calculations. Experimental fission cross sections for gold have been determined at energies of 500, 672, 1068 and 1665 MeV, and...
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