分析了材料的真空放气特性对阴极寿命的影响。
The influence of the outgassing of the material in vacuum on the cathode lifetime is analyzed.
基于杂质气体在阴极表面的吸附，理论推导并得到了阴极寿命与真空度的关系。
Based on the adsorption of harmful gases on the cathode surface, an equation about the relationship between the cathode lifetime and the pressure was deduced theoretically.
影响碳纳米管阴极场发射稳定性和寿命的主要因素有真空度、场发射过程中的热效应以及场发射体对场发射电流的承载能力等。
Field emission stability and life time of CNT cathode is closely related with the vacuum level, thermal effects during the emission and the current transport capability.
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