Electron-beam focusing and unfocusing experiments

Alexander V. Filatov; Yu. A. Kotov; V. A. Motovilov; V. A. Scotnikov

doi:10.1117/12.174544

1 May 1994 Electron-beam focusing and unfocusing experiments

Alexander V. Filatov, Yu. A. Kotov, V. A. Motovilov, V. A. Scotnikov

Proceedings Volume 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum; (1994) https://doi.org/10.1117/12.174544
Event: XVI International Symposium on Discharges and Electrical Insulation in Vacuum, 1994, Moscow-St. Petersburg, Russian Federation

Abstract

The paper presents experiments aimed at focusing and unfocusing pulsed electron beams of energy from 0.2 to 1.5 MeV by 3 to 35 kA currents with a duration of up to 200 ns. A cathode construction has been found experimentally which in recording on an X-ray film permits obtaining a resolution of 5 lines per millimeter with a penetrability of up to 40 mm of lead. A pulsating voltage with an amplitude over 10 kV is shown to exist at the prepulse voltage across the cathode. An electric generator substitution circuit has been found that explains the occurrence of a voltage pulsation across the cathode. The presence of the aforementioned voltage leads to the high-current diode being filled with plasma before a major high-voltage pulse arises. Conditions have been found experimentally which enable electron beam focusing or unfocusing.

Citation Download Citation

Alexander V. Filatov, Yu. A. Kotov, V. A. Motovilov, and V. A. Scotnikov "Electron-beam focusing and unfocusing experiments", Proc. SPIE 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum, (1 May 1994); https://doi.org/10.1117/12.174544

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