RF gun with ferroelectric cathode

RF guns generate bunched electron beams with pulse current Ip∼10−1–103 A and current pulse duration τp∼10−6–10−12 s. The parameters are defined by the type of a cathode used mainly. We propose to apply a ferroelectric cathode in RF gun for the generation of electron beams with Ip more than few amperes, τp∼10−8 s and current density of electron emission in a ferroelectric cathode jcfe may be ∼103 A/cm2. We consider results of experimental study of S-band RF gun with ferroelectric plasma cathode. Obtained maximum Ip at RF gun output is 9 A with τp≈40–90 ns and electron energy We≅500 keV.