On the remote monitoring of gaseous uranium hexafluoride in the lower atmosphere using lidar
On the remote monitoring of gaseous uranium hexafluoride in the lower atmosphere using lidar
Uranium hexafluoride (UF6), a major material for uranium enrichment, is highly toxic and can have adverse effects on the environment and human health if it escapes into the atmosphere. This paper proposes a contactless enhanced remote-sensing system for spatial and temporal detection of gaseous UF6 in the atmosphere and visualization of the leakage location. The system is composed of a combination of differential absorption lidar (DIAL) and Raman lidar for the simultaneous detection of gaseous UF6 and HF. The DIAL provides information on the UF6 concentration using a frequency-quadrupled Nd:YAG laser at 266 nm for the off-wavelength and a Nd:YAG-pumped Coumarin 450 dye laser using a Littrow grating mounting operating in the frequency-doubled mode at 245 nm for the on-wavelength. The Raman scattering of molecular HF at a wavelength of 297.3 nm (with a Raman frequency shift of 3959 cm−1) is a versatile technique used to identify the HF as a probe for real-time detection of the toxic UF6 leakage location. Combining the simultaneous measurements of UF6 and HF allows for a reduction of the uncertainty and an increase in the sensitivity of remote sensing of UF6.
1192-1198
Shayeganrad, Gholamreza
8ea55a9a-4fe2-49df-a0f4-55fa81596dab
2013
Shayeganrad, Gholamreza
8ea55a9a-4fe2-49df-a0f4-55fa81596dab
Shayeganrad, Gholamreza
(2013)
On the remote monitoring of gaseous uranium hexafluoride in the lower atmosphere using lidar.
Optics and Lasers in Engineering, 51, .
(doi:10.1016/j.optlaseng.2013.03.004).
Abstract
Uranium hexafluoride (UF6), a major material for uranium enrichment, is highly toxic and can have adverse effects on the environment and human health if it escapes into the atmosphere. This paper proposes a contactless enhanced remote-sensing system for spatial and temporal detection of gaseous UF6 in the atmosphere and visualization of the leakage location. The system is composed of a combination of differential absorption lidar (DIAL) and Raman lidar for the simultaneous detection of gaseous UF6 and HF. The DIAL provides information on the UF6 concentration using a frequency-quadrupled Nd:YAG laser at 266 nm for the off-wavelength and a Nd:YAG-pumped Coumarin 450 dye laser using a Littrow grating mounting operating in the frequency-doubled mode at 245 nm for the on-wavelength. The Raman scattering of molecular HF at a wavelength of 297.3 nm (with a Raman frequency shift of 3959 cm−1) is a versatile technique used to identify the HF as a probe for real-time detection of the toxic UF6 leakage location. Combining the simultaneous measurements of UF6 and HF allows for a reduction of the uncertainty and an increase in the sensitivity of remote sensing of UF6.
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Accepted/In Press date: 7 March 2013
e-pub ahead of print date: 18 May 2013
Published date: 2013
Identifiers
Local EPrints ID: 479225
URI: http://eprints.soton.ac.uk/id/eprint/479225
ISSN: 0143-8166
PURE UUID: ec99b50c-15fe-4389-856d-549268377f1c
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Date deposited: 20 Jul 2023 16:46
Last modified: 17 Mar 2024 03:53
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