Results 1 to 10 of about 9,952,830 (307)

Performance of a Low Energy Ion Source with Carbon Nanotube Electron Emitters under the Influence of Various Operating Gases [PDF]

open access: yesNanomaterials, 2020
Low energy ion measurements in the vicinity of a comet have provided us with important information about the planet’s evolution. The calibration of instruments for thermal ions in the laboratory plays a crucial role when analysing data from in-situ
Huzhong Zhang   +6 more
doaj   +2 more sources

Cathode Design Optimization toward the Wide-Pressure-Range Miniature Discharge Ion Source for a Vacuum Micropump [PDF]

open access: yesSensors, 2019
It is difficult to generate and maintain the vacuum level in vacuum MEMS (Micro-Electro-Mechanical Systems) devices. Currently, there is still no single method or device capable of generating and maintaining the desired vacuum level in a vacuum device ...
Tongtong Yao   +3 more
doaj   +2 more sources

Diagnostics tools and methods for negative ion source plasmas, a review

open access: yesNew Journal of Physics, 2017
Plasma parameter measurements for negative hydrogen (H ^− ) ion sources have been playing an important role in clarifying fundamental physics related to negative ion production and destruction processes. Measured data of beam properties, such as H ^− ion
Katsuyoshi Tsumori, Motoi Wada
doaj   +2 more sources

Modeling of plasma transport and negative ion extraction in a magnetized radio-frequency plasma source

open access: yesNew Journal of Physics, 2017
Negative ion sources for fusion are high densities plasma sources in large discharge volumes. There are many challenges in the modeling of these sources, due to numerical constraints associated with the high plasma density, to the coupling between plasma
G Fubiani   +4 more
doaj   +2 more sources

Development and Evaluation of Ferrite Core Inductively Coupled Plasma Radio Frequency Ion Source for High-Current Ion Implanters in Semiconductor Applications [PDF]

open access: yesSensors
This study presents the development of a ferrite core inductively coupled plasma (ICP) radio frequency (RF) ion source designed to improve the lifetime of ion sources in commercial ion implanters.
Jong-Jin Hwang   +2 more
doaj   +2 more sources

Design, Fabrication and Mass-spectrometric Studies of a Micro Ion Source for High-Field Asymmetric Waveform Ion Mobility Spectrometry [PDF]

open access: yesMicromachines, 2019
A needle-to-cylinder electrode, adopted as an ion source for high-field asymmetric ion mobility spectrometry (FAIMS), is designed and fabricated by lithographie, galvanoformung and abformung (LIGA) technology.
Hua Li   +6 more
doaj   +2 more sources

Focused ion beam-induced platinum deposition with a low-temperature cesium ion source [PDF]

open access: yesBeilstein Journal of Nanotechnology
In addition to precise milling, the deposition of material at a specific location on a sample surface is a frequently used process of focused ion beam (FIB) systems.
Thomas Henning Loeber   +5 more
doaj   +2 more sources

An Integrated Microfabricated Chip with Double Functions as an Ion Source and Air Pump Based on LIGA Technology [PDF]

open access: yesSensors, 2017
The injection and ionization of volatile organic compounds (VOA) by an integrated chip is experimentally analyzed in this paper. The integrated chip consists of a needle-to-cylinder electrode mounting on the Polymethyl Methacrylate (PMMA) substrate.
Hua Li   +5 more
doaj   +2 more sources

Tin–Lead Liquid Metal Alloy Source for Focused Ion Beams [PDF]

open access: yesMicromachines
Focused Ion Beam (FIB) systems are increasingly utilized in nanotechnology for nanostructuring, surface modification, doping, and rapid prototyping.
Bryan Flores   +6 more
doaj   +2 more sources

First operations with caesium of the negative ion source SPIDER

open access: yesNuclear Fusion, 2022
The negative-ion based neutral beam injector for heating and current drive of the ITER plasma (ITER HNB) is under development, at present focusing on the optimization of the full-scale plasma source in the SPIDER test stand.
E. Sartori   +59 more
semanticscholar   +1 more source

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