Abstract
This letter reports on the development of a laser fluorescence complex for high-sensitivity real-time selective detection of 127I and 129I molecular iodine isotopologues in gaseous media. A diode laser tunable in the range of 631–638 nm is used as an excitation source of molecular iodine fluorescence. Sensitivities of detection of molecular iodine isotopologues and boundary relations for simultaneous detection of 127I and 129I were evaluated. It is shown that practical realization of the methods for the detection of molecular iodine isotopologues using a developed laser fluorescence complex provides an opportunity to control these isotopologues in gaseous technological media formed during the reprocessing of spent nuclear fuel and in the atmospheric air.
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