Results 11 to 20 of about 2,441 (222)

Thermionic Emission from Diamond Films in Molecular Hydrogen Environments

open access: yesFrontiers in Mechanical Engineering, 2017
Diamond-based low-work function thermionic electron emitters are in high demand for applications ranging from electron guns and space thrusters to electrical energy converters.
William F. Paxton   +7 more
doaj   +1 more source

From molecular autoionization to thermionic emission [PDF]

open access: yesMolecular Physics, 2007
Autoionization of Rydberg states and delayed ionization are two decay processes where the excess energy in the molecule or cluster is released by ejecting a free electron. While precise spectroscopic studies of molecular autoionization are commonly performed, allowing a very detailed understanding of the ongoing processes, the study of delayed ...
Lepine, Franck   +4 more
openaire   +1 more source

Tungsten Thermionic Emission as a Gauge for Low Pressures of Cesium Vapor

open access: yesInstruments, 2020
Heated metal filaments under electric fields and low pressures of alkali metal gas eject electrons by thermionic emission as a function of the pressure of the gas and the temperature of the filament.
João Shida   +3 more
doaj   +1 more source

Temperature Dependent Electrical Transport in Al/Poly(4-vinyl phenol)/p-GaAs Metal-Oxide-Semiconductor by Sol-Gel Spin Coating Method

open access: yesInternational Journal of Photoenergy, 2016
Deposition of poly(4-vinyl phenol) insulator layer is carried out by applying the spin coating technique onto p-type GaAs substrate so as to create Al/poly(4-vinyl phenol)/p-GaAs metal-oxide-semiconductor (MOS) structure.
Şadan Özden, Cem Tozlu, Osman Pakma
doaj   +1 more source

Selected methods of converting solar energy into electricity - comparative analysis

open access: yesE3S Web of Conferences, 2018
This article presents selected methods of converting solar energy into electricity: photovoltaic cells (PV), converters which use photon-enhanced thermionic emission (PETE), and near-field enhanced thermionic energy conversion systems (NETEC).
Gawkowski Kamil, Sikora Jarosław
doaj   +1 more source

A statistical mechanics derivation of the empirical asymptotic thermionic emission equation

open access: yesAIP Advances, 2019
This paper will obtain a physical derivation for a very useful empirical emission formula. Thermionic emission has long been understood, by the supply side limited regime, described by Richardson-Dushman’s equation and the space charge regime by Child ...
R. T. Longo
doaj   +1 more source

Testing an indirectly heated cathode ion source: Temperature and thermionic emission

open access: yesAIP Advances, 2019
Here we compare the cathode surface temperatures and thermionic emissions of a novel thermal barrier cathode against original equipment manufacturing (OEM).
C. F. M. Borges, M. A. Jerez, A. Parizat
doaj   +1 more source

MEMOS 3D modelling of ELM-induced transient melt damage on an inclined tungsten surface in the ASDEX Upgrade outer divertor

open access: yesNuclear Materials and Energy, 2018
The first MEMOS 3D simulations of liquid metal motion on an inclined bulk tungsten sample transiently molten by edge-localized modes (ELMs) are reported.
E. Thorén   +6 more
doaj   +1 more source

Solar electron source and thermionic solar cell

open access: yesAIP Advances, 2012
Common solar technologies are either photovoltaic/thermophotovoltaic, or use indirect methods of electricity generation such as boiling water for a steam turbine.
Parham Yaghoobi   +2 more
doaj   +1 more source

Design of selective absorber-emitter based on carbon nanotubes and tungsten for thermo-photovoltaic applications [PDF]

open access: yesCientífica
In this research, the design of a thermophotovoltaic solar cell is formulated to increase energy efficiency through a photo-thermionic emission process.
José Antonio García-Merino
doaj   +1 more source

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