Influence of current-voltage characteristic processing methods on the value of effective parameters of field cathodes
Kolosko A. G.1, Filippov S. V.1, Popov E. O.1
1Ioffe Institute, St. Petersburg, Russia
Email: agkolosko@mail.ru
The paper analyzes the experimental current-voltage characteristics registered for a multitip nanocomposite field cathode based on carbon nanotubes. The analysis makes it possible to calculate effective estimates of the key parameters of field emission: the field enhancement factor and the emission area. A comparison of various approaches to analysis is presented, which include: various types of selection of a linear section on the current-voltage characteristic for constructing a trend line, various methods of averaging characteristics to eliminate the influence of the noise fluctuations, and the use of various coordinates for curve approximation. Keywords: field emission, Fowler-Nordheim coordinates, trend line, effective parameters.
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