Work

Simulation of lightning spectra and diagnosis of lightning parameters

Year: 2025

Type: article

Abstract: Atomic spectral data for atoms and ions of nitrogen, oxygen, and hydrogen were calculated using flexible atomic code. Based on the Collisional Radiation Model (CRM), the lightning spectra taken by our group in the Qinghai region of China using a flawless slit spectrometer were simulated. When the simulated spectra match well with experiments, the matched electron temperature (Te), electron density (ne), and abundance (η) are determined, and can be treated as the lightning parameters. In addition, the entangled multiplet lines can introduce errors in the diagnosis of Te and ne in the Local Thermodynamic Equilibrium (LTE) model. A fitting technique is proposed to effectively reduce these errors to generate the optimized Te and ne. The results indicate that the matched Te and ne in CRM are in precise agreement with the optimized one in LTE.

Source: Journal of Applied Physics

DOI: 10.1063/5.0253635

Authors: Feng Wei, Xiaozhi Shen, Ping Yuan, Tingting An, Cuicui Sang, Yingying An

Institutions: Northwest Normal University, Tianjin Normal University, Lanzhou University of Technology

Language: English

Topic: Lightning and Electromagnetic Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funder: National Natural Science Foundation of China