ISSN:
1608-3180
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract Studies intended for increasing the accuracy and sensitivity in determining the 129I concentration in various gas media are carried out. The effect of the gas components of the working medium, which develops during the reprocessing of waste nuclear fuel at radiochemical plants, on the 129I fluorescence excited by radiation of He–Ne laser (633 nm) is studied. The factors strongly affecting the laser-excited fluorescence of 129I and 127I iodine isotopes in atmospheric air (frequency of the exciting radiation, the temperature of the iodine vapor, and the pressure of the analyzed gas mixture) are studied. The values of these parameters, optimal from the viewpoint of the 129I detection sensitivity, are determined. A method for measuring the 129I and 127I concentrations in atmospheric air is proposed. A laser complex for online monitoring of the 129I concentration in gases is developed. It can be used for 129I concentration measurements in working media during the reprocessing of waste nuclear fuels, making it possible to affect the technological procedure and, in particular, to improve its ecological safety. The system developed can be used for ecological monitoring of atmospheric air.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1026692522724
Permalink