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Proceedings Paper

Remote leak monitoring of gaseous uranium hexafluoride by UVDIAL
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Paper Abstract

Uranium hexafluoride (UF6) molecule is highly toxic and finding leaks into the atmosphere has environmental and health significant. A differential absorption lidar (DIAL) system for concentration monitoring of UF6 leaked into the atmosphere is being developed. This paper describes a new UV-DIAL long range remote sensor for quick identification and spatial distribution monitoring as well as measuring concentration and allows seeing where gas exits are located, what may be possible for UF6 detecting leaks and repair them. The system uses a frequencyquadrupled Nd:YAG laser for the on wavelength and a Nd:YAG-pumped Coumarin dye laser with Lithman setup operating in the frequency doubled mode for the off wavelength. We synchronously pumped a Coumarin dye laser with the 532-nm light from the diode-pumped Nd:YAG system to achieve tunable light around 245 nm. By mapping the UF6 distribution concentration over an area, the leakage location can be determined due to UF6 absorption at 245 nm. This is particularly true in UF6 leak detection applications such as UF6- storage container and UF6-pipeline. The systematic errors due to aerosol extinction and absorption by atmospheric constituents are considered. It has been found that the systematic errors in remote sensing of UF6 at 266 nm and 245 nm can be negligible.

Paper Details

Date Published:
PDF: 8 pages
Proc. SPIE 7462, Ultraviolet and Visible Ground- and Space-based Measurements, Trace Gases, Aerosols and Effects VI, 74620J; doi: 10.1117/12.829585
Show Author Affiliations
Gholamreza Shayeganrad, Islamic Azad Univ. (Iran, Islamic Republic of)
Leila Mashhadi, Amirkabir Univ. of Technology (Iran, Islamic Republic of)

Published in SPIE Proceedings Vol. 7462:
Ultraviolet and Visible Ground- and Space-based Measurements, Trace Gases, Aerosols and Effects VI
Jay R. Herman; Wei Gao, Editor(s)

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