Abstract
The limiting emission currents of matrix field cathodes based on carbon nanotubes are investigated for their dependence on the cathode working area, as well as the features of the Fowler-Nordheim curves in cyclic measurements of the I-V characteristics under cyclic measurements of CVC. The migration of the thermal overload region of emitters with a temperature of more than 1500 K (with emission in the visible spectral range) on the surface of a matrix cathode is set, as well as two types of divergence of the Fowler-Nordheim curves under cyclic measurements of CVC.
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Schedule a callMore From: IOP Conf. Series: Materials Science and Engineering
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