气候变化领域集成服务门户(CCPortal): Submicrosecond Spectroscopy of Lightning-Like Discharges: Exploring New Time Regimes

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DOI	10.1029/2020GL088755
	Submicrosecond Spectroscopy of Lightning-Like Discharges: Exploring New Time Regimes
	Kieu N.; Gordillo-Vázquez F.J.; Passas M.; Sánchez J.; Pérez-Invernón F.J.; Luque A.; Montanyá J.; Christian H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Submicrosecond (0.476 μs per frame with an exposure time of 160 ns) high-resolution (0.38 nm) time-resolved spectra of laboratory-produced lightning-like electrical discharges have been recorded for the first time within the visible spectral range (645–665 nm). The spectra were recorded with the GrAnada LIghtning Ultrafast Spectrograph (GALIUS), a high-speed imaging spectrograph recently developed for lightning research in the IAA-CSIC. Unprecedented spectral time dynamics are explored for meter long laboratory electrical discharges produced with a 2.0 MV Marx generator. The maximum electron density and gas temperature measured in a timescale of ≤0.50 μs (160 ns) were, respectively, ≃1018 cm−3 and ≃32,000 K. Overpressure in the lightning-like plasma channel, black-body dynamics, and self-absorption in spectral lines were investigated. © 2020. The Authors.
英文关键词	Density of gases; Spectrographs; Electrical discharges; High resolution; High speed imaging; Marx generators; Self absorption; Sub-microsecond; Time-resolved spectra; Visible spectral range; Lightning; electron density; lightning; plasma; spectroscopy; temperature effect
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170047
作者单位	Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain; Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany; Department of Electrical Engineering, Universitat Politécnica de Catalunya, Terrassa, Spain; Earth System Science Center, University of Alabama in Huntsville, Huntsville, AL, United States
推荐引用方式 GB/T 7714	Kieu N.,Gordillo-Vázquez F.J.,Passas M.,et al. Submicrosecond Spectroscopy of Lightning-Like Discharges: Exploring New Time Regimes[J],2020,47(15).
APA	Kieu N..,Gordillo-Vázquez F.J..,Passas M..,Sánchez J..,Pérez-Invernón F.J..,...&Christian H..(2020).Submicrosecond Spectroscopy of Lightning-Like Discharges: Exploring New Time Regimes.Geophysical Research Letters,47(15).
MLA	Kieu N.,et al."Submicrosecond Spectroscopy of Lightning-Like Discharges: Exploring New Time Regimes".Geophysical Research Letters 47.15(2020).