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众所周知,氧化物阴极具有工作温度低、脉冲发射大的特性。这些特性在电真空器件中得到了广泛的应用。目前脉冲运用的电真空器件正向着宽脉冲、大工作比的方向发展。无论是从事阴极工作的同志还是从事器件设计、使用的同志都迫切需要知道氧化物阴极在宽脉冲、大工作比条件下可供实际使用的发射电流密度。多年来,国内外对氧化物阴极的脉冲特性作了广泛的研究。国内的代表作有文献[1][2][3]。从搜集到的资料看,多数的研究者是着眼于脉冲电流的不稳定性、脉冲衰减、电火
As we all know, the oxide cathode has a low temperature, pulse emission characteristics. These features in the vacuum device has been widely used. At present, the pulse of the use of electric vacuum devices are moving wide pulse, large work than the direction of development. Both comrades engaged in cathode work or device design, the comrades used urgently need to know the oxide cathode in a wide pulse, the working conditions than the actual available emission current density. Over the years, the pulse characteristics of oxide cathodes have been extensively studied both at home and abroad. Domestic representative literature [1] [2] [3]. From the collected data, most researchers focus on the instability of pulse current, pulse attenuation, electric fire