N. Bushuev, A. Burtsev, Y. Grigoriev, A. Pavlov, N. I. Sinitsyn, A. V. Danilushkin, V. I. Rogovin, K. V. Shumikhin
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引用次数: 0
摘要
本文介绍了由碳纳米管场发射阴极片组成的电子光学系统的计算结果,该阴极片与发射器表面间隔为100微米的微网格。在实验数据的基础上,设计了线性收敛为6,25的片状碳纳米管阴极,光束电流密度为4,46 a /cm2的电子光学系统。光束在相互作用空间的厚度为0,16 mm。在这种情况下,电子枪产生的片状电子束的模拟表明,在25 mm慢波系统长度的束流隧道0,3×0,8中获得小变形的低性能流动是可行的。
The electron-optical system with magnetic focusing based on sheet carbon nanotube field emitters for twt at terahertz frequencies
This report presents the results of calculation of electron-optical system consisting of a sheet CNT field emission cathode with a microgrid spaced from the surface of the emitter at 100 microns. On the basis of experimental data, it has been designed electron-optical system with a sheet CNT cathode with linear convergence of 6,25, and with the beam current density of 4,46 A/cm2. The thickness of the beam in the interaction space is 0,16 mm. In this case, the simulation of the sheet electron beam, generated by electron gun has shown feasibility of obtaining of low-perveance flow with a small deformation in beam tunnel 0,3×0,8 at 25 mm slow-wave system length.