Abstract
The short-lived bromine and iodine isotopes from thermal neutron fission of 235 U 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 of 86 Br, 134m I, 134g I, 136m I, and 136g I, the cumulative yields of 87 Br, 88 Br, 137 I, 138 I. The isomeric yield ratio of 134 I and 136 I has been determined and the iodine isotopic distribution curve has been constructed and analyzed. © 1988 Akadémiai Kiadó.