用于220 GHz 50W片束行波管放大器的散射阴极

Jinfeng Zhao, D. Gamzina, A. Baig, L. Barnett, Jian-xun Wang, N. Luhmann
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引用次数: 2

摘要

在阴极寿命试验车上(CLTV)进行了连续波模式下皮尔斯枪配置的纳米复合材料sc2o3加钨阴极测试。直流和脉冲电流密度下的发射性能保持一致。在CLTV #1中,由于性能问题(焦点电极与阴极发射面之间存在100微米的间隙),在实际温度1120°C Br下,可以获得10 A/cm2的直流电流密度,持续时间超过2000小时。在FE间隙减小的cltv# 2中,直流电流密度为45 A/cm2。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Scandate dispenser cathode for 220 GHz 50W sheet beam travelling wave tube amplifier
Nanocomposite Sc2O3-added tungsten dispenser cathodes were tested in Cathode Life Test Vehicles (CLTV) with a Pierce gun configuration under CW mode. The emission performance for both dc and pulsed current density remained consistent. In CLTV #1, owing to perveance issue (there is 100 micron gap between focus electrode and cathode emission surface), 10 A/cm2 dc current density can be acquired at practical temperature of 1120°C Br for more than 2000 hours. In CLTV #2 with reduced FE gap, 45 A/cm2 dc current density is obtained.
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