Generation of subnanosecond electron beams in air at atmospheric pressure |
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Authors: | I. D. Kostyrya V. F. Tarasenko E. Kh. Baksht A. G. Burachenko M. I. Lomaev D. V. Rybka |
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Affiliation: | 1.Institute of High-Current Electronics, Siberian Branch,Russian Academy of Sciences,Tomsk,Russia |
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Abstract: | Optimum conditions for the generation of runaway electron beams with maximum current amplitudes and densities in nanosecond pulsed discharges in air at atmospheric pressure are determined. A supershort avalanche electron beam (SAEB) with a current amplitude of ∼30 A, a current density of ∼20 A/cm2, and a pulse full width at half maximum (FWHM) of ∼100 ps has been observed behind the output foil of an air-filled diode. It is shown that the position of the SAEB current maximum relative to the voltage pulse front exhibits a time shift that varies when the small-size collector is moved over the foil surface. |
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