Journal of Geophysical Research
This study presents experimental results for the radial and temporal variation of neutral and ion spectroscopic signatures emerging from the heated channel of lightning-like discharges diagnosed with a high speed (900,000 fps) imaging spectrograph. Light emissions emanate from three regions: an inner core (up to ∼2 mm), an external sheath (up to ∼4 mm) featuring a sudden temperature increase, and further optical emissions forming a dim glow from 4 mm up to 16 mm. The optical emissions are initially (
Passas-Varo, M.; Gordillo-Vazquez, F. J.; Sanchez, J.; and Kieu, Ny PhD, "Experimental Radial Profiles of Early Time (<4 >μs) Neutral and Ion Spectroscopic Signatures in Lightning-Like Discharges" (2022). Physics: Faculty Publications and Other Works. 68.
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