IMPEDANCE OF A VACUUM DIODE OF A PICOSECOND HIGH-CURRENT ELECTRON-ACCELERATOR

It is shown that the impedance of the vacuum diode of a picosecond ele ctron accelerator affects the energy of electrons and the beam current . Relationships for determining the vacuum-diode impedance obtained on the basis of the planar-diode theory ate used for deriving the expres sions for the reflection coefficient, accelerating voltage, and curren t beam. Forward and reflected voltage pulses in a picosecond accelerat or are measured as functions of vacuum-diode impedance and characteris tic impedance of the transmission line on IMAZ-150E tubes with various interelectrode gaps.