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Acta Optica Sinica, Volume. 43, Issue 12, 1230001(2023)

Analysis on Lightning Spectral Characteristics of Canton Tower

Xuejuan Wang1,2, Haitong Wang1, Leyan Hua1, Lü Weitao2、*, Lüwen Chen3, Ying Ma2, Qi Qi2, Bin Wu2, Weiqun Xu2, Jing Yang4, and Qilin Zhang1
Author Affiliations
  • 1Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/International Laboratory on Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)/Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China
  • 2State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China
  • 3Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510641, Guangdong, China
  • 4Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
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    Original luminous images of the discharge process

    Fig. 1. Original luminous images of the discharge process

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    Two-dimensional time-resolved spectrograms of three return strokes at channel height of about 337 m and magnified spectrograms of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet. (a) R1;(b) magnified spectrogram of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet for R1; (c) R2; (d) magnified spectrogram of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet for R2; (e) R3; (f) magnified spectrogram of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet for R3

    Fig. 2. Two-dimensional time-resolved spectrograms of three return strokes at channel height of about 337 m and magnified spectrograms of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet. (a) R1;(b) magnified spectrogram of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet for R1; (c) R2; (d) magnified spectrogram of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet for R2; (e) R3; (f) magnified spectrogram of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet for R3

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    Three-dimensional time evolution spectrograms of three return strokes at channel height of about 337 m. (a) R1; (b) R2; (c) R3

    Fig. 3. Three-dimensional time evolution spectrograms of three return strokes at channel height of about 337 m. (a) R1; (b) R2; (c) R3

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    Original spectra of three return strokes. (a) R1,-0.07 ms; (b) R1,0 ms; (c) R1,0.07 ms; (d) R2,38.75 ms; (e) R2,38.82 ms;(f) R2,38.89 ms; (g) R3,86.04 ms; (h) R3,86.11 ms; (i) R3,86.18 ms

    Fig. 4. Original spectra of three return strokes. (a) R1,-0.07 ms; (b) R1,0 ms; (c) R1,0.07 ms; (d) R2,38.75 ms; (e) R2,38.82 ms;(f) R2,38.89 ms; (g) R3,86.04 ms; (h) R3,86.11 ms; (i) R3,86.18 ms

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    Variations of the spectrogram along the channel height for each return stroke. (a) R1,0 ms; (b) R1,0.07 ms; (c) R1,0.14 ms; (d) R2,38.82 ms; (e) R2,38.89 ms; (f) R3,86.11 ms; (g) R3,86.18 ms

    Fig. 5. Variations of the spectrogram along the channel height for each return stroke. (a) R1,0 ms; (b) R1,0.07 ms; (c) R1,0.14 ms; (d) R2,38.82 ms; (e) R2,38.89 ms; (f) R3,86.11 ms; (g) R3,86.18 ms

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    Variations of total intensity of the spectra, total intensity of ionized lines, and total intensity of neutral lines along the channel height for each return stroke. (a) R1,0 ms; (b) R1,0.07 ms; (c) R1,0.14 ms; (d) R2,38.82 ms; (e) R2,38.89 ms;(f) R3,86.11 ms; (g) R3,86.18 ms

    Fig. 6. Variations of total intensity of the spectra, total intensity of ionized lines, and total intensity of neutral lines along the channel height for each return stroke. (a) R1,0 ms; (b) R1,0.07 ms; (c) R1,0.14 ms; (d) R2,38.82 ms; (e) R2,38.89 ms;(f) R3,86.11 ms; (g) R3,86.18 ms

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    Intensity ratios of measured spectral lines and the ratios of theoretical gA values within the NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet. (a) NI 856.8/859.4 nm; (b) 856.8/862.9 nm; (c) 859.4 /862.9 nm

    Fig. 7. Intensity ratios of measured spectral lines and the ratios of theoretical gA values within the NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet. (a) NI 856.8/859.4 nm; (b) 856.8/862.9 nm; (c) 859.4 /862.9 nm

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    • Table 1. Transition parameters of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet

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      Table 1. Transition parameters of NI [856.8 nm, 859.4 nm, 862.9 nm] multiplet

      Wavelength /nmTransition probability with statistical weight gA /（×108 s-1）Excitation energy E /eV

      Upper level

      Conf.，Term，J

      856.80.19412.1262s22p2（3P）3p 2P°3/2
      859.40.41812.1222s22p2（3P）3p 2P°1/2
      862.91.0712.1262s22p2（3P）3p 2P°3/2
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    Xuejuan Wang, Haitong Wang, Leyan Hua, Lü Weitao, Lüwen Chen, Ying Ma, Qi Qi, Bin Wu, Weiqun Xu, Jing Yang, Qilin Zhang. Analysis on Lightning Spectral Characteristics of Canton Tower[J]. Acta Optica Sinica, 2023, 43(12): 1230001

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    Paper Information

    Category: Spectroscopy

    Received: Jul. 21, 2022

    Accepted: Oct. 26, 2022

    Published Online: Apr. 25, 2023

    The Author Email: Weitao Lü (wtlu@ustc.edu)

    DOI:10.3788/AOS221510

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology