Analysis of the Behavior of Individual Emission Sites on the Surface of a Multi-Tip Field Cathode


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A method of analysis of the surface of multi-tip field cathodes using data obtained with the aid of a computer-controlled field emission projector and a system of fast high-voltage scanning is described. An investigation of a polymer/carbon nanotube composite field electron emitter by this method was used to determine the distribution of individual emission sites over the surface of a multi-tip field cathode and to estimate variation of the work function of separate emission sites depending on the applied voltage. The contributions of separate groups of emission sites to a change of the shape of current–voltage characteristic of a multi-tip cathode have been numerically estimated.

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A. Kolosko

Ioffe Physical Technical Institute, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: agkolosko@mail.ru
俄罗斯联邦, St. Petersburg, 194021

E. Popov

Ioffe Physical Technical Institute, Russian Academy of Sciences

Email: agkolosko@mail.ru
俄罗斯联邦, St. Petersburg, 194021

S. Filippov

Ioffe Physical Technical Institute, Russian Academy of Sciences

Email: agkolosko@mail.ru
俄罗斯联邦, St. Petersburg, 194021

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