Abstract

The short-lived bromine and iodine isotopes from thermal neutron fission of235U have been separated from fission products by one step solvent extraction combined with an ion exchange fast chemistry system. The measured gamma spectra have been acquisited by an automatic computer on-line system. The results include experimental independent fission yields of86Br,134mI,134gI,136mI, and136gI, the cumulative yields of87Br,88Br,137I,138I. The isomeric yield ratio of134I and136I has been determined and the iodine isotopic distribution curve has been constructed and analyzed.

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