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- W2023506713 abstract "We seek to identify the most promising materials and geometries for field emitter tips and arrays (FEA) in applications requiring stable high current and conductance in a moderate vacuum. Mo FEAs have been used successfully in relatively high current (50–100 mA) TWTs. But molybdenum has some undesirable characteristics. For several years we have studied field emission from refractory carbides, particularly ZrC, and found that ZrC surfaces have very desirable characteristics for stable high current field emission. We calculate thermal effects and instabilities for five emitter materials and conclude that W or Mo emitters coated with a thin coating of ZrC have the highest current capability, particularly for dc emission. We then calculate β factors for various field emission microdiodes and triodes. We conclude that broad cone angle ZrC/Mo emitters have the highest conductance capability. We then discuss several factors which cause FEA performance to fall short of theoretical calculations in practice. We th..." @default.
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- W2023506713 date "2001-01-01" @default.
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- W2023506713 title "Robust high current field emitter tips and arrays for vacuum microelectronics devices" @default.
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- W2023506713 doi "https://doi.org/10.1116/1.1349203" @default.
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