辐射腔中碳纳米管阴极的安培级脉冲场发射
Ampère-Class Pulsed Field Emission from Carbon-Nanotube Cathodes in a Radiofrequency Resonator
摘要：
在射频谐振腔中，观察到冷碳纳米管阴极的脉冲场发射。阴极位于在1.3-GHz下操作的常规$1+\frac{1}{2}$单元谐振腔的背板上，并且导致产生具有接近0.7安培的最大平均电流的聚束训练。测量的福勒-诺德海姆特性，横向发射度，和脉冲持续时间，并在可能的情况下，相比数值模拟。我们的结果的影响，高平均电流电子源进行了简要讨论。
英文摘要：
Pulsed field emission from cold carbon-nanotube cathodes placed in a radiofrequency resonant cavity was observed. The cathodes were located on the backplate of a conventional $1+\frac{1}{2}$-cell resonant cavity operating at 1.3-GHz and resulted in the production of bunch train with maximum average current close to 0.7 Ampère. The measured Fowler-Nordheim characteristic, transverse emittance, and pulse duration are presented and, when possible, compared to numerical simulations. The implications of our results to high-average-current electron sources are briefly discussed.
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