X-ray radiation and runaway electron beam spectra at a nanosecond discharge in atmospheric-pressure air |
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Authors: | S B Alekseev E Kh Baksht A M Boichenko I D Kostyrya V F Tarasenko A N Tkachev |
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Institution: | 1. Institute of High-Current Electronics, Siberian Branch, Akademicheskii pr. 2/3, Tomsk, 634055, Russia 2. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia
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Abstract: | The dependences of the electron beam intensity and X-ray dose on the thickness of metal foils (Al, Cu) in a nanosecond discharge initiated in atmospheric-pressure air are studied theoretically and experimentally. Calculated curves of electron beam attenuation in aluminum and X-ray dose attenuation in copper agree well with experimental data. It is found that the amplitude of a super-short avalanche electron beam and the X-ray exposure dose reach maximal values at different values of the interelectrode gap. When the length of the cathode??s edge with a small radius of curvature increases, an interelectrode gap maximizing the amplitude of the runaway electron current shrinks. |
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