改进了W-Ir分配器阴极的电子发射

IVESC 2012 Pub Date : 2012-04-24 DOI:10.1109/IVESC.2012.6264198

M. Ravi, K. Kumar, P. D. Devi, K. S. Bhat, L. Kumar

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引用次数: 5

摘要

用掺有氧化锂的浸渍混合物制备了W-Ir分配器阴极，并在紧密间隔的二极管结构中测试了其发射特性。在1075℃下，Li2O掺杂后，发射电流密度从7.5 A/cm2提高到32 A/cm2。到目前为止，已经测量了32000小时的寿命。

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Improved electron emission from W-Ir dispenser cathodes

W-Ir dispenser cathodes have been fabricated with lithium oxide doped impregnant mix and tested for their emission characteristics in a closely spaced diode configuration. With Li2O doping, emission current density improved from 7.5 to 32 A/cm2 at 1075°C. 32000 hours of life as on date has been measured.

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IVESC 2012

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