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TitleRelativistic Feedback Discharges in Dielectric Solids
Date2026
AbstractThe photoelectric feedback processes leading to growth of relativistic runaway electron avalanches are believed to be responsible for extreme fluxes of gamma rays produced from very compact regions of space with dimensions on the order of hundred meters in association with lightning activity in the Earth's natural environment (Pasko et al., 2025, https://doi.org/10.1029/2025JD043897). Here we demonstrate for the first time that the same photoelectric feedback discharges can be realized on centimeter scales in common solid state dielectric materials, like quartz, acrylic and bismuth germanate. These discharge can serve as new sources of high energy X-ray radiation.
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Data DOIdoi:10.26208/WS96-WN71

Researchers
Pasko, V. P.
Penn State Department of Electrical Engineering
Celestin, S.
University of Orleans, CNRS, Orleans, France
Bourdon, A.
Ecole Polytechnique, Palaiseau, France

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References
Pasko, V. P., S. Celestin, and A. Bourdon, Relativistic Feedback Discharges in Dielectric Solids, Physical Review Letters, 136, https://doi.org/10.1103/4p6l-rzck, 2026