Results 1 to 10 of about 484,094 (178)

Ferrites with a Minimized Secondary Electron Yield [PDF]

Advanced Science
Ferrites are an essential material in modern industry due to their exceptional magnetic properties and high resistivity. Many applications of ferrites necessitate exposure to high energy electrons, particularly space science and particle accelerators ...
Robin Uren, Manuel Hoffman, Amin Din, Stefan Wackerow, Holger Neupert, Stephan Pfeiffer, Alice Moros, Michael Barnes, Giorgia Favia, Marcel Himmerlich, Amin Abdolvand   +10 more
doaj   +5 more sources

The Role of Molecular Structure in Monte Carlo Simulations of the Secondary Electron Yield and Backscattering Coefficient from Methacrylic Acid [PDF]

Molecules, 2023
In this paper, we show the influence of the chemical structure of four different conformers on the secondary electron emission and backscattering of an electron beam from a gel of methacrylic acid.
Katarzyna Wiciak-Pawłowska, Anna Winiarska, Simone Taioli, Maurizio Dapor, Małgorzata Franz, Jan Franz   +5 more
doaj   +2 more sources

Carbon-oxygen surface formation enhances secondary electron yield in Cu, Ag and Au [PDF]

Scientific Reports, 2022
First-principles calculations coupled with Monte Carlo simulations are used to probe the role of a surface CO monolayer formation on secondary electron emission (SEE) from Cu, Ag, and Au (110) materials.
M. Brown, L. Diaz, A. Aslan, M. Sanati, S. Portillo, E. Schamiloglu, R. P. Joshi   +6 more
doaj   +2 more sources

Role of surface microgeometries on electron escape probability and secondary electron yield of metal surfaces. [PDF]

Sci Rep, 2020
The influence of microgeometries on the Secondary Electron Yield (SEY) of surfaces is investigated. Laser written structures of different aspect ratio (height to width) on a copper surface tuned the SEY of the surface and reduced its value to less than ...
Bajek D, Wackerow S, Zanin DA, Baudin L, Bogdanowicz K, Valdivieso EG, Calatroni S, Di Girolamo B, Sitko M, Himmerlich M, Taborelli M, Chiggiato P, Abdolvand A.   +12 more
europepmc   +4 more sources

Low secondary electron yield engineered surface for electron cloud mitigation [PDF]

Applied Physics Letters, 2014
Secondary electron yield (SEY or δ) limits the performance of a number of devices. Particularly, in high-energy charged particle accelerators, the beam-induced electron multipacting is one of the main sources of electron cloud (e-cloud) build up on the ...
Amin Abdolvand, Cimino R., Furman M. A., Hseuh H. C., Oleg B. Malyshev, Reza Valizadeh, Sihui Wang, Svetlana A. Zolotovskaya, Vallgren C. Yin, W. Allan Gillespie   +9 more
core   +7 more sources

Electron Conditioning of Technical Aluminium Surfaces: Effect on the Secondary Electron Yield [PDF]

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 2004
The effect of electron conditioning on commercially aluminium alloys 1100 and 6063 were investigated. Contrary to the assumption that electron conditioning, if performed long enough, can reduce and stabilize the SEY to low values ($\leq 1.3$, value of ...
Benka O., Christ B. V., Ding M. Q., F. K. King, F. Le Pimpec, Halbritter J., Lide D. R., M. Pivi, Moulder J. F., R. E. Kirby, Steinbatz M., Xie Y.   +11 more
core   +3 more sources

Analysis of multipacting threshold sensitivity to the random distributions of the secondary electron yield parameters [PDF]

Scientific Reports
The way multipacting develops, depends strongly on the secondary emission property of the surface material. The knowledge of secondary electron yield is crucial for accurate prediction of the multipacting threshold. Variations in secondary electron yield
Firozeh Kazemi, Maryam Mostajeran, Gennady Romanov   +2 more
doaj   +2 more sources

The secondary electron yield of noble metal surfaces [PDF]

AIP Advances, 2017
Secondary electron yield (SEY) curves in the 0-1000 eV range were measured on polycrystalline Ag, Au and Cu samples. The metals were examined as introduced in the ultra-high vacuum chamber and after having been cleaned by Ar+ ion sputtering.
L. A. Gonzalez, M. Angelucci, R. Larciprete, R. Cimino   +3 more
doaj   +4 more sources

Optimization of the secondary electron yield of laser-structured copper surfaces at room and cryogenic temperature [PDF]

Physical Review Accelerators and Beams, 2020
Electron cloud (e-cloud) mitigation is an essential requirement for proton circular accelerators in order to guarantee beam stability at a high intensity and limit the heat load on cryogenic sections.
Sergio Calatroni, Elisa Garcia-Tabares Valdivieso, Ana Teresa Perez Fontenla, Mauro Taborelli, Holger Neupert, Marcel Himmerlich, Paolo Chiggiato, David Bajek, Stefan Wackerow, Amin Abdolvand   +9 more
doaj   +3 more sources

Electron-insulator interaction and secondary electron yield at any Kelvin temperature

Results in Physics, 2021
The universal formulae for λ(χreal, Eg, T) and λ(χreal, Eg, T)p of insulator having less impurities are experimentally proved, where λ(χreal, Eg, T) is the mean escape depth at Kelvin temperature T of secondary electrons emitted from insulators with band
Ai-Gen Xie, Hong-Jie Dong, Zheng Pan
doaj   +2 more sources