Results 61 to 70 of about 484,111 (194)

Monte Carlo model of electron energy degradation in a CO2 atmosphere [PDF]

open access: yes, 2009
A Monte Carlo model has been developed to study the degradation of
Ajello   +81 more
core   +4 more sources

Engineered surfaces to control secondary electron emission for multipactor suppression [PDF]

open access: yes, 2016
A significant problem for space-based systems is multipactor - an avalanche of electrons caused by repeated secondary electron emission (SEE). The consequences of multipactor range from altering the operation of radio frequency (RF) devices to permanent ...
Coutu, Ronald A., Jr.   +3 more
core   +1 more source

Artifacts in Secondary Electron Emission Yield Measurements [PDF]

open access: yes, 2004
Measurement of secondary electron yields and electron energy distributions appears straightforward--simple equipment, simple electronics, easy-to-acquire data, at least in a laboratory setting. Unfortunately, the low secondary electron energy (2-5 eV) and the extreme sensitivity of the yield to surface condition and surrounding environment make the ...
openaire   +1 more source

Effects of secondary yield parameter variation on predicted equilibrium potential of an object in a charging environment [PDF]

open access: yes
The sensitivity of predicted equilibrium potential to changes in secondary electron yield parameters was investigated using MATCHG, a simple charging code which incorporates the NASCAP material property formulations.
Purvis, C. K.
core   +1 more source

Carbon coating of the SPS dipole chambers

open access: yes, 2013
The Electron Multipacting (EM) phenomenon is a limiting factor for the achievement of high luminosity in accelerators for positively charged particles and for the performance of RF devices.
Calatroni, S.   +7 more
core   +1 more source

Monte Carlo modeling of low-energy electron-induced secondary electron emission yields in micro-architected boron nitride surfaces [PDF]

open access: yes, 2019
Surface erosion and secondary electron emission (SEE) have been identified as the most critical life-limiting factors in channel walls of Hall-effect thrusters for space propulsion.
Alvarado, Andrew   +3 more
core   +2 more sources

Beam impingement angle effects on secondary electron emission characteristics of textured pyrolytic graphite [PDF]

open access: yes
Experimentally determined values of true secondary electron emission and relative values of reflected primary electron yield for untreated and ion-textured pyrolytic graphite over a range of primary electron energy levels and electron beam impingement ...
Curren, A. N., Jensen, K. A.
core   +1 more source

Aluminum Secondary Electron Yield

open access: yes, 2019
Accurate modeling of spacecraft charging is essential to mitigate well-known and all-too-common deleterious and costly effects on spacecraft resulting from charging induced by interactions with the space plasma environment. This paper addresses how limited availability of electron emission and transport properties of spacecraft materials—in particular ...
Dennison, JR, Lundgreen, Phillip
openaire   +2 more sources

MONTE CARLO SIMULATION OF INTERACTION BETWEEN AN ELECTRON BEAM AND A NANO-SILICON FILM

open access: yesJournal of Fundamental and Applied Sciences, 2018
Due to the fundamental role played by the interaction electron-matter in scanning electron microscopy (Electron Beam Induced Current -EBIC- in Silicon case), a Monte  Carlo calculation model of this interaction applied in  silicon nanostructure (nano ...
Z. Elateche, M.S. Aida
doaj   +1 more source

Secondary Electron Yield Measurements of Fermilab's Main Injector Vacuum Vessel

open access: yes, 2013
We discuss the progress made on a new installation in Fermilab's Main Injector that will help investigate the electron cloud phenomenon by making direct measurements of the secondary electron yield (SEY) of samples irradiated in the accelerator.
/Fermilab   +14 more
core   +2 more sources

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