Current, core channel radius, and related parameters of channel plasma in artificially triggered lightning

Based on plasma physics methods, the relationship among the channel current (i), core channel radius (r(cc)), and other related parameters including electrical conductivity (sigma), thermal conductivity (lambda(e)), and thermal diffusion coefficient (D-e(T)) was investigated and strong interdependence was found among these parameters. Then, these dependent relationships together with the measured electron temperature (T-e) and electron density (n(e)), derived from spectral diagnostics, were applied to determine the measured results on the i, r(cc), sigma, lambda(e), and D-e(T) of channel plasma in artificially triggered lightning along with their measured accuracies. Good accordance can be found with the aid of comparisons with other measurements of the artificially triggered lightning [L. Cai et al., J. Electrost. 109, 103537 (2021)].