Abstract
The half-lives of 131-135I isotopes prepared by short irradiation of highly enriched 235U in an SM-3 high-flux nuclear reactor were determined by direct γ-ray spectrometric procedure. The measurement were carried out on automated γ-ray spectrometers equipped with DGDK-100V and DGDK-32-3 type semiconductor germanium detectors. For each isotope new half-lives were evaluated: 8.044±0.008 days (131I), 2.38±0.23 h (132I), 20.36±0.01 h (133I), 52±8 min (134I), and 6.9±0.4 h (135I); the results were compared with published data.
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