Results 21 to 30 of about 5,727,139 (328)

Cold plasma studies on the influence of surface microstructured thickness in the secondary electron emission from tungsten coatings

Nuclear Materials and Energy, 2023
The Secondary Electron Emission (SEE) from the Plasma Facing Components, (PFCs) affects the plasma sheath and edge structure of magnetically confined toroidal plasmas with effects on the Scrappe Off Layer (SOL), heat transport and incident plasma heat ...
A. de Castro, E. Oyarzábal, F.L. Tabarés   +2 more
doaj   +1 more source

The Design of the Emission Layer for Electron Multipliers

Nanoscale Research Letters, 2021
The electron multipliers gain is closely related to the secondary electron emission coefficient (SEE) of the emission layer materials. The SEE is closely related to the thickness of the emission layer.
Yuman Wang, Baojun Yan, Kaile Wen, Shulin Liu, Ming Qi, Binting Zhang, Jianyu Gu, Wenjing Yao   +7 more
doaj   +1 more source

Mitigation of electron cloud effects in the FCC-ee collider

EPJ Techniques and Instrumentation, 2022
Electron clouds forming inside the beam vacuum chamber due to photoemission and secondary emission may limit the accelerator performance. Specifically, the electron clouds can blow up the vertical emittance of a positron beam, through a head-tail-type ...
Fatih Yaman, Giovanni Iadarola, Roberto Kersevan, Salim Ogur, Kazuhito Ohmi, Frank Zimmermann, Mikhail Zobov   +6 more
doaj   +1 more source

Chemical Analysis of Secondary Electron Emission from a Water Cathode at the Interface with a Nonthermal Plasma.

Langmuir, 2020
When a nonthermal plasma and a liquid form part of the same circuit, the liquid may function as a cathode, in which case electrons are emitted from the liquid into the gas to sustain the plasma.
Hernan E. Delgado, D. Elg, D. Bartels, P. Rumbach, D. Go   +4 more
semanticscholar   +1 more source

High energy and high intensity electron and X-ray beams by pyroelectric effect [PDF]

, 2012
The production of x-rays has been a useful technique in many areas of science, medicine and various industries for over 100 years. Over this time various new methods of generating x-rays have been produced, allowing improved performance in existing ...
Hockley, Matthew
core   +7 more sources

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

, 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 ...
Oleg B. Malyshev, Zolotovskaya, Svetlana A.; id_orcid, Valizadeh, Reza, W. Allan Gillespie, Amin Abdolvand, Malyshev, Oleg B., Reza Valizadeh, Gillespie, W. Allan, Sihui Wang, Wang, Sihui, Svetlana A. Zolotovskaya, Abdolvand, Amin, Zolotovskaya, Svetlana, Abdolvand, Amin; id_orcid, Malyshev, Oleg   +14 more
core   +1 more source

Utilization of Secondary Electron Emission Principle in Calorimeter Active Media [PDF]

EPJ Web of Conferences
Secondary electron emission is the primary signal formation and/or amplification technique utilized in accelerator beam monitors and photomultiplier tubes where incident energetic particles cause ejection of additional electrons from a secondary emission
Bilki B., Dilsiz K., Ogul H., Onel Y., Sahbaz K.K., Southwick D., Tiras E., Tosun M., Wetzel J., Winn D.   +9 more
doaj   +1 more source

Characteristics of secondary electron emission and multipactor from a nested microtrap structure surface

AIP Advances, 2021
It is known that an appropriate surface structure can suppress the secondary electron emission as a result of the receded multipactor in a spacecraft microwave component. On the other hand, the multiplier effect caused by electron re-entrance in ordinary
Lu Liu, Guobao Feng, Bangdao Chen, Ning Wang, Wanzhao Cui   +4 more
doaj   +1 more source

Investigation of the Effect of Structural Properties of a Vertically Standing CNT Cold Cathode on Electron Beam Brightness and Resolution of Secondary Electron Images

Nanomaterials, 2021
Carbon nanotube (CNT)-based cold cathodes are promising sources of field emission electrons for advanced electron devices, particularly for ultra-high-resolution imaging systems, due to their high brightness and low energy spread.
Ha Rim Lee, Da Woon Kim, Alfi Rodiansyah, Boklae Cho, Joonwon Lim, Kyu Chang Park   +5 more
doaj   +1 more source

Secondary electron emission characteristics of oxide electrodes in flat electron emission lamp

AIP Advances, 2016
The present study concerns with the secondary electron emission coefficient, γ, of the cathode materials used in the newly developed flat electron emission lamp (FEEL) devices, which essentially integrates the concept of using cathode for fluorescent ...
Chang-Lin Chiang, Hui-Kai Zeng, Chia-Hung Li, Jung-Yu Li, Shih-Pu Chen, Yi-Ping Lin, Tai-Chiung Hsieh, Jenh-Yih Juang   +7 more
doaj   +1 more source