학술논문
Microbreakdowns in vacuum diode gaps with field-emission cathodes made of glass carbon
Document Type
Conference
Source
2014 International Conference on Actual Problems of Electron Devices Engineering (APEDE) Actual Problems of Electron Devices Engineering (APEDE), 2014 International Conference on. 1:100-105 Sep, 2014
Subject
Language
Abstract
In this paper we perform experimental research results of micro breakdowns in diode gaps with the dimension less than 100 mkm. The main reason of micro breakdowns of gaps from 100mkm to 30 mkm is an explosion of nanoapexes on the cathode when the current density is about 1×10 8 A/cm 2 . In gaps less than 30 mkm the main initiator of breakdown is a warming-up and in some case also the anode material fusion in parts opposite the microapexes with power of electron flow with microapexes.