光谱学与光谱分析 |
|
|
|
|
|
Study on the Conductivity Properties of Lightning Channel by Spectroscopy |
WANG Xue-juan1, YUAN Ping1*, CEN Jian-yong1, WANG Jie2, ZHANG Ting-long3 |
1. Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China 2. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Key Laboratory of Environment Optics and Technology, Hefei 230031, China 3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
|
|
Abstract Combining the spectra of cloud-to-ground lightning return obtained by a slit-less spectrograph with the transport theory of air plasma, the electrical conductivity in one discharge channel was calculated with different methods. The results show that the conductivity of the lightning channel core is of the order of 104 S·m-1; the conductivity goes down with the increase in the channel height in the same channel; the contributions of the collisions between electron and first or second degree ionized atoms, and electron-electron as well as ion-ion collisions to the electrical conductivity of the lightning channel core can not be neglected; the collision integrals method is more reasonable for calculating the conductivity of the lightning channel core. Based on the conductivity, the discharge current was estimated and compared with the peak current of every return stroke, and the results are in the reasonable range, further, the correlation between the channel temperature and the discharge characteristics is discussed, which provides a practical way for this aspect.
|
Received: 2013-03-13
Accepted: 2013-05-25
|
|
Corresponding Authors:
YUAN Ping
E-mail: yuanp@mwmu.edu.cn
|
|
[1] Pinto O,Pinto I R C A,Saba M M F,et al. Atmospheric Research,2005,76(1-4):493. [2] Cooray V,Montano R,Rakov V. Journal of Electrostatics,2004,60(2):97. [3] Diendorfer G,Uman M A. J. Geophys Res.,1990,95(9):13621. [4] Joseph E,Borovsky. J. Geophys. Res.,1995,100(D2):2697. [5] Jagdish RAI. Ann Geophys.,1980,263. [6] Spitzer L. Physics of Fully Ionized Gases. New York:John Willey and Sons,1962:250. [7] Uman M A. J. Atmos Terre Phys.,1964,26:1215. [8] Chang Z S,Zhao N,Yuan P. Physics of Plasmas,2010,17:113514. [9] QIU De-ren(邱德仁). Atomic Spectral Analysis(原子光谱分析). Shanghai: Fudan University Press(上海:复旦大学出版社),2001. 37. [10] LI Ding,CHEN Yin-hua,MA Jin-xiu,et al(李 定,陈银华,马锦秀,等). Physics of Plasma(等离子体物理学). Beijing: Higher Education Press(北京:高等教育出版社),2006. 54. [11] Shkarofsky I P,Bachynski M P,Johnston T W. London:Addison Wesley,1966. 1619. [12] Capitelli M,Gorse C,Longo S,et al. Thermophys Heat Transf.,2000,14:259. [13] Devoto R S. Phys. Fluids,1967,10:2105. [14] Liboff R L. Phys. Fluids,1959,2:40. [15] Cen Jianyong,Yuan Ping,Qu Haiyan,et al. Physics of Plasmas,2011,18:113506. [16] GUO Yi-xiao,YUAN Ping,QU Hai-yan(郭逸潇,袁 萍,瞿海燕). Plateau Meteorology(高原气象),2009,28(3):675. [17] Golde R H. Lightning(雷电). Tanslated by ZHOU Shi-jian, SUN Jing-qun(周诗健,孙景群译). Beijing: Electric Power Industry Press(北京:电力工业出版社),1981. 119. |
[1] |
ZHANG Ting-ting1, ZHAO Bin1, YANG Li-ming2, WANG Jian-hua1, SUN Qun1*. Determination of Conductivity in Sweet Corn Seeds with Algorithm of GA and SPA Based on Hyperspectral Imaging Technique[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(08): 2608-2613. |
[2] |
WU Ya-kun1, 2, LIU Guang-ming2*, SU Li-tan3*, YANG Jin-song2. Accurate Evaluation of Regional Soil Salinization Using Multi-Source Data[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(11): 3528-3533. |
[3] |
YOU Jia1, LI Jing-bin1*, HUANG Di-yun1, PENG Shun-zheng2. Study on the Rapid Detection of Delinted Cottonseeds Conductivity with Hyperspectral Imaging Technique[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1437-1441. |
[4] |
XIAO Zhen-zhen1, LI Yi1,2*, FENG Hao2,3. Hyperspectral Models and Forcasting of Physico-Chemical Properties for Salinized Soils in Northwest China[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(05): 1615-1622. |
[5] |
ZHAO Jin-cui1, YUAN Ping1*, CEN Jian-yong1, LI Ya-jun2, WANG Jie3 . Evolution Characteristics of Electromagnetic Power Radiated in Lightning Discharge Processes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(06): 1474-1478. |
[6] |
PENG Jie1, WANG Jia-qiang1, XIANG Hong-ying1, TENG Hong-fen2, LIU Wei-yang1, CHI Chun-ming1, NIU Jian-long1, GUO Yan2, SHI Zhou2*. Comparative Study on Hyperspectral Inversion Accuracy of Soil Salt Content and Electrical Conductivity[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(02): 510-514. |
[7] |
YU Yong-hua. Quantitative Determination of Parameters of Substrate Using Near-Infrared Spectroscopy Technique[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(11): 2928-2931. |
[8] |
ZHANG Hua-ming1,3,YUAN Ping1,2*,SU Mao-gen1,Lü Shi-hua2. The Electrical Conductivity of Triggered Lightning Channel[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 1929-1932. |
|
|
|
|