Zhang Enguan, Yuan Wanzong, Liu Xiaoping, et al. EXPERIMENTAL STUDIES OF FERROELECTRIC CATHODES[J]. High Power Laser and Particle Beams, 1993, 05: 425-432.
Citation:
Zhang Enguan, Yuan Wanzong, Liu Xiaoping, et al. EXPERIMENTAL STUDIES OF FERROELECTRIC CATHODES[J]. High Power Laser and Particle Beams, 1993, 05: 425-432.
Zhang Enguan, Yuan Wanzong, Liu Xiaoping, et al. EXPERIMENTAL STUDIES OF FERROELECTRIC CATHODES[J]. High Power Laser and Particle Beams, 1993, 05: 425-432.
Citation:
Zhang Enguan, Yuan Wanzong, Liu Xiaoping, et al. EXPERIMENTAL STUDIES OF FERROELECTRIC CATHODES[J]. High Power Laser and Particle Beams, 1993, 05: 425-432.
Electron emission produced by fast polarization change of the ferroelectrics is a potential electron beam source. Both experimental modse, E ∥ P and E ⊥ P , as well as their behaviors are reported in this paper. J - E characteristics of both materials, PZT - 95/5 and PLZT -1/95/5, for different modes are given. It's pointed out that the presence of the metal strip grid is a disfavour factor, which results in redistribution of the current between the anode and the strip grid electrode. Moreover, the limited breakdown threshold of the sample is a main hinder for increasing excitation field. In order to overcome these difficults, a mode, E ⊥ P , has been developed using "polarization rotation" idea to replace "polarization reversion" . This idea has been confirmed by our experiments.
DownLoad: