Thermionic emission is the liberation of charged particles from a hot electrode whose thermal energy gives some particles enough kinetic energy to escape...

tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic emission. This is in contrast...

or field enhanced thermionic emission is a phenomenon in condensed matter physics named after Walter H. Schottky. In electron emission devices, especially...

in the vacuum are excluded in defining the work function. Thermionic emission In thermionic electron guns, the work function and temperature of the hot...

external connection pins. The type known as a thermionic tube or thermionic valve utilizes thermionic emission of electrons from a hot cathode for fundamental...

to describe field emission from other materials.[citation needed] The related phenomena of surface photoeffect, thermionic emission (or Richardson–Dushman...

radius of about 100 nm, or of the Schottky type,: 1–28  in which thermionic emission is enhanced by barrier lowering in the presence of a high electric...

emission or thermionic emission. Thermionic emission occurs when the thermal energy exceeds the metal's work function, while field electron emission occurs...

electron gun is large enough. In this case, the emission current is regulated by the thermionic emission process, given by the Richardson Dushman equation...

but are not hot enough for significant thermionic emission. Because cold cathode lamps have no thermionic emission coating to wear out, they can have much...

causes it to release electrons into the vacuum, a process called thermionic emission. The cathode is coated with oxides of alkaline earth metals, such...

due to the: Schottky effect or field enhanced thermionic emission Field electron emission, emission of electrons induced by an electrostatic field An...

electronic viewpoint, thermionic energy conversion is the direct production of electric power from heat by thermionic electron emission. From a thermodynamic...

discharge is initiated either by thermionic emission or by field emission. After initiation, the arc relies on thermionic emission of electrons from the electrodes...

flowing through the barrier is essentially governed by the laws of thermionic emission, combined with the fact that the Schottky barrier is fixed relative...

The Diode equation includes the emission coefficient (which is not related to the one discussed here) Thermionic emission Incorporated, SynLube. "Spectroscopy...

experiment Emission theory (vision), the proposal that visual perception is accomplished by rays of light emitted by the eyes Thermionic emission, the flow...

the surface, an effect called thermionic emission. This technique is used in most vacuum tubes. Field electron emission: A strong electric field can be...

cover certain apparent exceptions. In 1853, Becquerel discovered thermionic emission. In 1867 and 1868 Becquerel published La lumière, ses causes et ses...

its surface; these were the cathode rays. Modern vacuum tubes use thermionic emission, in which the cathode is made of a thin wire filament which is heated...

who received the Nobel Prize in Physics in 1928 for his work on thermionic emission, which led to Richardson's law. Richardson was born in Dewsbury,...

considered "cold" if it emits more electrons than can be supplied by thermionic emission alone. It is used in gas-discharge lamps, such as neon lamps, discharge...

thermionic emission or use thin barriers and transport carriers via tunneling. Carrier lifetime for escape is determined by tunneling and thermionic emission...

resembles a vacuum tube in appearance, its operation does not depend on thermionic emission of electrons from a hot cathode. It is hence a cold cathode tube...

surface cooling and heating mechanism that occurs during field and thermionic electron emission. The effect is named after physicist Wayne B. Nottingham who...

only one direction. The heated filament, or cathode, was capable of thermionic emission of electrons that would flow to the plate (or anode) when it was...

devices, technical physics, and technology. The Schottky effect (a thermionic emission, important for vacuum tube technology), the Schottky diode (where...

Nordheim, assisted by Ralph Fowler, published a paper that discussed thermionic emission and reflection of electrons from metals. He assumed a surface potential...

surround the metal object in a cloud of free electrons. This is called thermionic emission. The resulting cloud is negatively charged, and can be attracted...

electrons either through heating (thermionic emission) or in an electric field that is sufficient to cause field electron emission. Once initiated, a vacuum arc...