Physics of Plasmas · 2014 · 14 citations · 16 references
Natural SciencesGeophysicsPhysicsAtmospheric ElectricityPlasma PhysicsSpectroscopyCloud-to-ground LightningLightning CurrentLightning PhysicsPlasma DiagnosticsThunderstorm ElectricityThunderstorm ElectrificationCloud-to-ground Lightning DetectionCloud-to-ground Lightning PropagationDischarge ProcessesElectron DensityElectron Density DistributionsLightning Channel TemperatureLightning Discharge PhysicsSlit Spectroscopy
A cloud-to-ground lightning with six return strokes has been recorded with a slit-less spectrograph in Qinghai province. According to the spectra of return strokes without continuous current, the electron density, the channel temperature, and the gas pressure have been calculated. Then, the correlativity of these parameters has been analyzed. The results indicate that the total intensity of spectra is positive correlated to the intensity of spectral line, they both decrease with time rapidly; furthermore, the channel temperature and the gas pressure decrease with time slowly in the similar trends.
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