Results 11 to 20 of about 309,738 (293)
RF and Microwave Ion Sources Study at Institute of Modern Physics
Plasma, 2021 Intense ion beam production is of high importance for various versatile applications from accelerator injectors to secondary ion mass spectrometry (SIMS). For these purposes, different types of ion beams are needed and, accordingly, the optimum plasma to
Qian Y. Jin +5 more
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Chemical ionization quadrupole mass spectrometer with an electrical discharge ion source for atmospheric trace gas measurement [PDF]
Atmospheric Measurement Techniques, 2019 We present a chemical ionization quadrupole mass spectrometer (CI-QMS) with a radio-frequency (RF) discharge ion source through N2∕CH3I as a source of primary ions. In addition to the expected detection of PAN, peracetic acid (PAA) and ClNO2 through well-
P. G. Eger +6 more
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He jishu, 2021 BackgroundCesium injection can significantly reduce the work function of plasma grid surface of the radio frequency (RF) negative ion source, which is an effective way to promote the surface generation and improve the yield of H- ions.PurposeThis study ...
WANG Haoming +10 more
doaj +1 more source
, 2016 Beam loss is a critical issue in high-intensity accelerators, and much effort is expended during both the design and operation phases to minimize the loss and to keep it to manageable levels.
Plum, M. A.
core +3 more sources
Mini rf-driven ion sources for focused ion beam systems
Review of Scientific Instruments, 2003 Mini rf-driven ion sources with 1.2 cm and 1.5 cm inner chamber diameter have been developed at Lawrence Berkeley National Laboratory. Several gas species have been tested including argon, krypton, and hydrogen. These mini ion sources operate in inductively coupled mode and are capable of generating high current density ion beams at tens of watts of ...
Jiang, X. +3 more
openaire +2 more sources
Development of the RF Ion Sources for Focused Ion Beam Accelerators [PDF]
Журнал нано- та електронної фізики, 2014 The paper presents the results of investigations of ion sources developed in the IAP of NAS of Ukraine for generation of high brightness ion beams with small energy spread.
V. Voznyi +5 more
doaj
Cesiated surface H− ion source: optimization studies
New Journal of Physics, 2017 The H ^− ion beam intensity required for high-energy and high-intensity proton accelerators is continuously increasing. The required 95%-beam transverse normalized root mean square emittance ( ε _95%rnms _x _/ _y ) of the beam is around 0.25 π mm mrad ...
Akira Ueno
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Operation of Large RF Driven Negative Ion Sources for Fusion at Pressures below 0.3 Pa
Plasma, 2021 The large (size: 1 m × 2 m) radio frequency (RF) driven negative ion sources for the neutral beam heating (NBI) systems of the future fusion experiment ITER will be operated at a low filling pressure of 0.3 Pa, in hydrogen or in deuterium.
Dirk Wünderlich +4 more
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Ion Current Density Calculation of the Inductive Radio Frequency Ion Source [PDF]
Журнал нано- та електронної фізики, 2012 A radio-frequency (RF) inductive ion source at 27.12 MHz is investigated. With a global model of the argon discharge, plasma density, electron temperature and ion current density of the ion source is calculated in relation to absorbed RF power and gas ...
V.I. Voznyi +3 more
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Study of RF Stray Currents in ITER Neutral Beam Test Facilities
Applied Sciences, 2021 The operation of SPIDER (Source for the Production of Ions of Deuterium Extracted from Radio-frequency plasma), full-scale prototype of ITER NBI (Neutral Beam Injector) radio-frequency ion source, pointed out deleterious effects caused by stray Radio ...
Riccardo Casagrande +4 more
doaj +1 more source