摘要
设计了一种新型的高功率低气压等离子体电子枪。基于空心阴极效应和低压辉光放电原理与经验．确定了空心阴极、加速间隙、工作气压范围等。提出关于等离子体阴极电子枪产生高功率、高密度电子束源的整体方案。分别在连续馈气和脉冲馈气条件下进行实验测试，得到放电电流、收集极电流与气压、脉宽及调制器电压的关系。实验获得电子枪的典型放电电流为150～200A，脉宽60ps；传输电子柬达到30～80A，脉宽60ps。该结果表明该新型等离子体阴极电子枪可以取代材料阴极作为大电流、长脉冲电子束源，特别适用于等离子体加载微波管。
The preliminary design of a new high-power low-pressure plasma-cathode e-gun is presented. Based on the hollow cathode effect and low-pressure glow discharge empirical formulas, the hollow cathode, the accelerating gap, and the working gas pressure region are given. The general experimental device of the low-pressure plasma cathode electron-gun generating high cur- rent density e-beam source is shown. Experiments has been done in continuous filled-in gases and gases-puff condition, and the discharging current of 150-200 A, the width of 60μs and the collector current of 30-80 A, the width of 60μs are obtaind. The results show that the new plasma cathode e-gun can take the place of material cathode e-gun, especially in plasma filled microwave tubes.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2006年第2期235-240,共6页
High Power Laser and Particle Beams
基金
国家自然科学基金资助课题(60401006)
大功率微波电真空器件技术国家级重点实验室基金资助课题
