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Model of quasi-steady-state electron-beam pinch in rod-pinch diodes

By: Ryzhov, V.V.; Kirikov, A.V.; Belomyttsev, S.Y.; Tarakanov, V.P.; Turchanovsky, I.Y.;

2001 / IEEE / 0-7803-7141-0

Description

This item was taken from the IEEE Conference ' Model of quasi-steady-state electron-beam pinch in rod-pinch diodes ' Summary form only given, as follows. Based on an experimental study, a qualitative model was suggested for the electron pinch formation in high-power rod-pinch diodes. In this model, it was assumed that the self-magnetic field slows the anode plasma expansion during the quasi-steady-state of the pinch. The present paper reports on a model of the quasi-steady-state of the pinch where there is no need to slow the plasma. This model has shown that the quasi-steady-state of the pinch is established due to a drastic change in the condition of the magnetic insulation of the gap at the time the pinch is formed. The pinch lifetime for rod-pinch diodes has been calculated under the assumption that plasmas formed on the electrode surfaces expand at a constant velocity. Estimations made within the framework of the given model agree with results of the KARAT/Monte Carlo code simulation and with experimental data.