Lanthanum Hexaboride Electron Beam Sources

本研究的目的是为PI加强技能 为NSF做好准备。 初步 多层脉冲光电阴极的研究将是 在规划期间编写的建议书的科学主旨 补助期。 激光驱动的光电子源可以是脉冲的， 并且能够同时实现 亮度高、寿命长、耐真空性差 条件 六硼化镧是一种低功函数材料 可以用来制造高效的光电发射器。 目前， 大多数关于这些光电发射器的工作都集中在 大面积、体、表面光电发射性能。 细节 的光电发射过程的多层，传输模式 六硼化镧光电阴极和光助光电阴极 微电子场发射阴极将作为一种 长期目标。 拟议的长期活动 调查涉及制造和测量 电气和材料性能的各种垂直和 横向阴极结构。

The objective of this research is for the PI to strengthen skills related to proposal preparation for NSF. A preliminary investigation of multi-layered pulsed photocathodes will be the scientific thrust of the proposals written during the planning grant period. Laser driven photoelectron sources can be pulsed at very high rates and are capable of simultaneously achieving high brightness, long lifetime, and resistance to poor vacuum conditions. Lanthanum Hexaboride is a low work function material that can be used to make efficient photoemitters. At present, most of the work on these photoemitters has been centered on the large area, bulk, surface photoemission properties. The details of the photoemission process for multi-layered, transmission mode Lanthanum Hexaboride photocathodes and photo-assisted microelectronic field emission cathodes will be investigated as a long term goal. The long term activities of proposed investigation involves fabricating and measuring the electrical and material properties of a variety of vertical and lateral cathode structures.