Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges
Abstract This work investigates the strongest optical emissions associated with long laboratory sparks (at the wavelengths of 337 and 777 nm) with the aim to understand similar emissions in lightning. The processes of the long‐spark formation are studied by using optical measurements, current signat...
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| Format: | Article |
| Language: | English |
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Wiley
2021-10-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2021GL095601 |
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| author | M. Arcanjo J. Montanyà M. Urbani V. Lorenzo |
| author_facet | M. Arcanjo J. Montanyà M. Urbani V. Lorenzo |
| author_sort | M. Arcanjo |
| collection | DOAJ |
| description | Abstract This work investigates the strongest optical emissions associated with long laboratory sparks (at the wavelengths of 337 and 777 nm) with the aim to understand similar emissions in lightning. The processes of the long‐spark formation are studied by using optical measurements, current signatures, and short‐time exposure images. Blue optical emissions (337 nm) are associated with streamer development and negative leader stepping, and the optical pulses have good correlation with current pulses. Red optical emissions (777 nm) are mainly associated with stable leader propagation, when this irradiance is predominant over the blue one. The results indicate that formations of stems from positive leaders also produce emissions at 777 nm. This work aims to support satellite‐based measurements that perform optical measurements in the same wavelength ranges. |
| format | Article |
| id | doaj-art-c7504e73904d4ee0b023db075ea8d516 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-c7504e73904d4ee0b023db075ea8d5162025-08-20T02:09:35ZengWileyGeophysical Research Letters0094-82761944-80072021-10-014820n/an/a10.1029/2021GL095601Optical Signatures Associated With Streamers and Leaders of Laboratory DischargesM. Arcanjo0J. Montanyà1M. Urbani2V. Lorenzo3Electrical Engineering Department Polytechnic University of Catalonia Barcelona SpainElectrical Engineering Department Polytechnic University of Catalonia Barcelona SpainElectrical Engineering Department Polytechnic University of Catalonia Barcelona SpainDena Desarrollos S. L. (Ingesco) Terrassa SpainAbstract This work investigates the strongest optical emissions associated with long laboratory sparks (at the wavelengths of 337 and 777 nm) with the aim to understand similar emissions in lightning. The processes of the long‐spark formation are studied by using optical measurements, current signatures, and short‐time exposure images. Blue optical emissions (337 nm) are associated with streamer development and negative leader stepping, and the optical pulses have good correlation with current pulses. Red optical emissions (777 nm) are mainly associated with stable leader propagation, when this irradiance is predominant over the blue one. The results indicate that formations of stems from positive leaders also produce emissions at 777 nm. This work aims to support satellite‐based measurements that perform optical measurements in the same wavelength ranges.https://doi.org/10.1029/2021GL095601lightningoptical emissionslong air gap dischargesstreamer discharges |
| spellingShingle | M. Arcanjo J. Montanyà M. Urbani V. Lorenzo Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges Geophysical Research Letters lightning optical emissions long air gap discharges streamer discharges |
| title | Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges |
| title_full | Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges |
| title_fullStr | Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges |
| title_full_unstemmed | Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges |
| title_short | Optical Signatures Associated With Streamers and Leaders of Laboratory Discharges |
| title_sort | optical signatures associated with streamers and leaders of laboratory discharges |
| topic | lightning optical emissions long air gap discharges streamer discharges |
| url | https://doi.org/10.1029/2021GL095601 |
| work_keys_str_mv | AT marcanjo opticalsignaturesassociatedwithstreamersandleadersoflaboratorydischarges AT jmontanya opticalsignaturesassociatedwithstreamersandleadersoflaboratorydischarges AT murbani opticalsignaturesassociatedwithstreamersandleadersoflaboratorydischarges AT vlorenzo opticalsignaturesassociatedwithstreamersandleadersoflaboratorydischarges |