Soft X-ray generation and its role in breakdown of air gap at elevated pressures
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- Kozyrev, A.V., Tarasenko, V.F., Baksht, E.K. et al. Tech. Phys. Lett. (2011) 37: 1054. doi:10.1134/S1063785011110253
Fast runaway electrons, which appear during the electric breakdown in an air-filled discharge gap under the action of a short-front voltage pulse, generate 525-eV photons from the K-shell of oxygen. This soft X-ray emission effectively generates new electrons in the region of enhanced field. The proposed mechanism may explain the fast streamer propagation and the formation of a diffuse discharge at atmospheric pressure.