A visible channel core and the channel structure below the connection point for natural cloud-to-ground lightning

doi:10.1063/1.5111845

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	A visible channel core and the channel structure below the connection point for natural cloud-to-ground lightning
	Liu, Guorong 1,2; Yuan, Ping 1; An, Tingting 1; Cen, Jianyong 3; Wang, Xuejuan 4
刊名	APPLIED PHYSICS LETTERS
	2019-08-05
卷号	115 期号:6
关键词	Lightning Channel cross section Channel structures Cloud-to-ground lightning Connecting leaders Connection points Lightning channel Physical mechanism Spectral characteristics
ISSN号	0003-6951
DOI	10.1063/1.5111845
英文摘要	The channel core of natural negative cloud-to-ground lightning was recorded using a high-speed slitless spectrograph, which confirms the corona sheath model of the lightning channel. By analyzing the channel spectra and images at different stages, it is corroborated that the ionic lines in spectra are mainly due to the channel core. Based on the luminescence and spectral characteristics, the connection point of the downward moving leader and the upward connecting leader was located, and it is concluded that the current is the highest at the connection point. Above all, it is discovered that there is no obvious channel core below the connection point, which means that the current is transmitted over the whole channel cross section. This feature is an important basis for investigating the lightning connection process and the physical mechanism of a lightning strike. Published under license by AIP Publishing.
资助项目	National Natural Science Foundations of China[11475139]
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000480288300029
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31652]
专题	理学院
通讯作者	Yuan, Ping
作者单位	1.Northwest Normal Univ, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Coll Phys & Elect Engn, Lanzhou 730070, Gansu, Peoples R China 2.Lanzhou Univ Technol, Dept Phys, Lanzhou 730050, Gansu, Peoples R China 3.Shanxi Normal Univ, Sch Phys & Informat Engn, Linfen 041004, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing 210044, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Liu, Guorong,Yuan, Ping,An, Tingting,et al. A visible channel core and the channel structure below the connection point for natural cloud-to-ground lightning[J]. APPLIED PHYSICS LETTERS,2019,115(6).
APA	Liu, Guorong,Yuan, Ping,An, Tingting,Cen, Jianyong,&Wang, Xuejuan.(2019).A visible channel core and the channel structure below the connection point for natural cloud-to-ground lightning.APPLIED PHYSICS LETTERS,115(6).
MLA	Liu, Guorong,et al."A visible channel core and the channel structure below the connection point for natural cloud-to-ground lightning".APPLIED PHYSICS LETTERS 115.6(2019).