Abstract
The formation of electron beams in a gas diode filled with various gases at low and medium pressures under the action of nanosecond voltage pulses has been studied. It is shown that subnanosecond pulses of the beam current in helium, hydrogen, neon, nitrogen, argon, methane, sulfur hexafluoride, krypton, and xenon can be obtained both at atmospheric pressure and at a pressure of several units or dozens of Torr. In particular, a beam current density above 2 kA/cm2 behind the foil at a pulse duration (FWHM) of 250 ps has been obtained in helium-filled diode. On the passage from the regime of ultrashort avalanche electron beam formation to the vacuum diode regime, the beam current pulse amplitude decreases, while both the beam pulse duration (FWHM) and the pulse front width increase.
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Original Russian Text © E.Kh. Baksht, M.I. Lomaev, D.V. Rybka, V.F. Tarasenko, 2006, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 32, No. 21, pp. 69–75.
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Baksht, E.K., Lomaev, M.I., Rybka, D.V. et al. High-current-density subnanosecond electron beams formed in a gas-filled diode at low pressures. Tech. Phys. Lett. 32, 948–950 (2006). https://doi.org/10.1134/S1063785006110125
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DOI: https://doi.org/10.1134/S1063785006110125