The signal generating source is simplified after the theoretical analyse of the system , and the cumbersome transformer is replaced too . in addition , the carbon fiber cathode substituted for the stainless steel cathode on the tomachan experimental device 在二極管陰極方面,為提高虛陰極振蕩器束波轉(zhuǎn)換的效率,利用碳纖維陰極替換原來(lái)的不銹鋼陰極來(lái)改善電子束質(zhì)量。