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Updated: Jul 17, 2025

Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization
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从场辐射过渡到碰撞空间电荷有限的电流与非零初始速度

Lorin I Breen1,2, Amanda M Loveless3, Adam M Darr3,4

  • 1School of Health Sciences, Purdue University, West Lafayette, IN, 47907, USA.

Scientific reports
|September 4, 2023
PubMed
概括

这项研究统一了电子设备的热电辐射 (RLD),场辐射 (FN) 和空间电荷有限电流 (SCLC) 规律 (CL和MG). 它为电流密度提供了一个新的精确解决方案,适用于各种条件.

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Theory of Metallic Conduction

The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
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In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
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