Spectroscopic measurements of light emissions from high current arcs

Hills, Meirion ORCID: https://orcid.org/0000-0003-3893-8486, Lugg-Widger, Phillip ORCID: https://orcid.org/0000-0002-0662-8590, Stone, Christopher, Peretto, Nicolas ORCID: https://orcid.org/0000-0002-6893-602X, Haddad, Abderrahmane ORCID: https://orcid.org/0000-0003-4153-6146 and Mitchard, Daniel 2024. Spectroscopic measurements of light emissions from high current arcs. Presented at: Cardiff University Engineering Research Conference 2023, Cardiff, UK, 12-14 July 2023. Published in: Spezi, Emiliano and Bray, Michaela eds. Proceedings of the Cardiff University Engineering Research Conference 2023. Cardiff: Cardiff University Press, pp. 158-162. 10.18573/conf1.aj

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Abstract

Due to the destructive impact of lightning, and the risk of increasing strikes attributed to climate change on the natural and built environment, work has been carried out to study the temperature and light emitted by laboratory generated lightning using non-invasive light-based instrumentation, which will allow optimisation of lightning protection. Using spectroscopy, the optical emission spectrum of a 55 kA lightning arc with a copper fuse wire was obtained for study. The results showed the light radiated in the visible and infrared range, with strong copper emission lines seen, and determined a temperature of the arc of 8,531±577 K. This is in preparation for subnanosecond resolution data to be recorded using a new streak spectrograph to create temporal data of lightning arcs. A new laboratory experimental set up is being developed to explore further electromagnetic emissions in the infrared, ultraviolet and x-rays, to derive other useful information about lightning phenomena.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General)
Additional Information:	Contents are extended abstracts of papers, not full papers
Publisher:	Cardiff University Press
ISBN:	978-1-9116-5349-3
Funders:	EPSRC, NERC
Date of First Compliant Deposit:	10 June 2024
Date of Acceptance:	2024
Last Modified:	30 Jul 2024 09:49
URI:	https://orca.cardiff.ac.uk/id/eprint/169706

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