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大功率磁控管用的高温阴极一般都含有放射性元素钍。但是文献[7]谈到了应用其他发射材料(主要是稀土氧化物)的可能性。 我们用氧化钇为发射物质研制成功了一种可用于大功率磁控管中的高温阴极—
High-temperature magnetron used in high-temperature cathode generally contain radioactive thorium. However, [7] mentioned the possibility of using other emissive materials (mainly rare earth oxides). We use yttrium oxide as the emitter of a successful development of a high-power magnetron can be used in high-temperature cathode -