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Role of an accumulation layer in field emission from cathode with DLC coating

Theoretical and experimental researches of field emission from silicon cathodes with DLC coating has been conducted with taking into account influence of accumulation layer on the Si-emitter boundary with DLC layer. It is shown theoretically that presence of emission 2D-electrons from accumulation layer leads to appearance the additional resonant current maximum. The resonant and nonresonant emission in dependence on DLC coated cathode parameters has been investigated.