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.
Our experiments showed that it can ensure the same stability of thermal emission current by use of a new method of corroding cathode point.
实验表明，采用新方法对阴极尖端进行腐蚀后得到的尖端阴极，同样可保证热发射束流的稳定性要求。
3
Solid solutions of the cathode material with high capacity, excellent recycling ability and good thermal stability can be synthesized by co-doping technology.