用针孔分析仪表征旋转电子束

International Electron Devices Meeting 1991 [Technical Digest] Pub Date : 1991-12-08 DOI:10.1109/IEDM.1991.235368

J. McAdoo, A. Kinkead, M. Sucy, A. Singh, M. Naiman

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引用次数: 0

摘要

建立了一种旋流电子束的表征仪器，并在环形旋流电子束上进行了实验。Larmor半径、轴向周期、导向中心位置、轴向速度扩展、方位速度扩展和能量扩展的测量，都是光束径向位置的函数。该仪器由固定的针孔箔、可旋转的狭缝箔和可平移的荧光粉屏组成，用于检测通过狭缝和针孔的电子。用于原型试验的束流电流为0.6 a，能量为16.5 kV，拉莫尔半径为3 mm，轴向周期为35 mm。光束直径名义为3厘米，环宽为2毫米。

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Characterization of gyrating electron beams with a pinhole analyzer

An instrument for characterizing gyrating electron beams has been built and tested on an annular gyrating beam. Measurements of Larmor radius, axial period, guiding center locations, axial velocity spread, azimuthal velocity spread, and energy spread, all as functions of radial position within a beam, are reported. The instrument consists of a stationary pinhole foil, a rotable slit foil, and a translatable phosphor screen for detecting electrons that pass through the slit and pinhole. The beam used for prototype tests had a current of 0.6 A, an energy of 16.5 kV, a Larmor radius of 3 mm, and an axial period of 35 mm. The beam diameter was nominally 3 cm, and the annular width was 2 mm.<>

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来源期刊

International Electron Devices Meeting 1991 [Technical Digest]

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