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Energies of emitted electrons from n-type diamond NEA surface and graphene/n-type diamond junction were measured by combined field emission spectroscopy/ultraviolet photoelectrons spectroscopy (FES/UPS) system. For n-type diamond NEA surface, the energies of emitted electrons indicated that the electrons emitted from conduction band of the diamond. For graphene/diamond junction, electron emission...
We have studied Smith Purcell radiation (SPR) as the one of solutions to emit high frequency electro magnetic wave. The SPR is a kind of mechanism of spontaneous emission, which consists of an accelerated electron beam and interaction metal circuit. Spontaneous emission emits from electric dipole in SPR and the output power is very weak. In order to increase radiation power, using short pulse is one...
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