Laser-stimulated emission of electrons from carbon nanostructures formed at laser evaporation of oriented carbon nanotubes

Electron emission from the surface of oriented carbon nanotubes on a Ni substrate under pulsed laser radiation is investigated. Carbon nanotubes vaporize from the Ni surface at the laser pulse energy E ≈ 0.2 J and then they are deposited on a molybdenum anode in the form of a scaly carbon structure. This leads to emission current inversion. The structure formed on Mo is a more effective emitter than the emitter of densely packed oriented multilayer nanotubes on the Ni substrate.