先进的空间充电有限场排放阴极.
1Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117, USA.
新型射场发射阴极被制造和测试在一个脉冲相对论的Vircator. 通过将测量的电流与3D空间电荷有限流量模型进行比较来评估性能,评估高功率微波系统的一致性和耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 等离子体物理学的物理学
- 微波工程 微波工程
背景情况:
- 开发先进的场辐射阴极对于增强高功率微波 (HPM) 系统至关重要.
- 现有的正极技术在苛刻的操作条件下面临性能,一致性和耐久性的局限性.
研究的目的:
- 构建和评估用于脉冲相对论维尔卡特器的新型场辐射阴极.
- 评估这些阴极作为高功率微波系统中先进或替代元件的可行性.
- 将实验电流测量与来自3D空间充电有限流量模型的理论预测进行比较.
主要方法:
- 使用各种材料与钢基板结合制造多个新型电场排放阴极.
- 在空间电荷有限的状态下,在350-550kV的脉冲相对论维尔卡特内测试阴极.
- 基于3D空间电荷有限流量模型的电流偏差分析阴极性能,以及一致性和耐用性评估.
主要成果:
- 测量了实验电流,并与3D空间电荷有限流量模型的预测进行了比较.
- 阴极性能通过测量电流与模型的偏差来量化.
- 新型阴极的一致性和耐用性是关键性能指标.
结论:
- 该研究为HPM应用提供了对新型场辐射阴极的评估.
- 与理论模型进行比较,可以了解阴极的行为和局限性.
- 这些发现有助于为高功率微波系统开发更强大,更高效的组件.
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