Results 11 to 20 of about 1,383,826 (295)

Preparation and Electrochemical Performance of a Graphene Cathode Catalyst Decorated With Pt by Prolysis

open access: yesFrontiers in Energy Research, 2022
For fuel cells, to produce high-quality and low-platinum catalyst is a pressing technical problem. In this study, graphene cathode catalysts with controllable platinum content were decorated by pyrolyzing chloroplatinic acid under various process ...
Xi Wang, Ying Ren, Ni Suo, Guifeng Zhang
doaj   +1 more source

Highly charged ion X-rays from Electron-Cyclotron Resonance Ion Sources [PDF]

open access: yes, 2006
Radiation from the highly-charged ions contained in the plasma of Electron-Cyclotron Resonance Ion Sources constitutes a very bright source of X-rays. Because the ions have a relatively low kinetic energy ($\approx 1$ eV) transitions can be very narrow ...
Bigot, E. -O. Le   +15 more
core   +4 more sources

Optimization of audio - ultrasonic plasma system parameters

open access: yesAIP Advances, 2016
The present plasma is a special glow plasma type generated by an audio ultrasonic discharge voltage. A definite discharge frequency using a gas at a narrow band pressure creates and stabilizes this plasma type.
N. A. Haleem   +2 more
doaj   +1 more source

Ion sources for MedAustron [PDF]

open access: yesReview of Scientific Instruments, 2010
The MedAustron Ion therapy center will be constructed in Wiener Neustadt (Austria) in the vicinity of Vienna. Its accelerator complex consists of four ion sources, a linear accelerator, a synchrotron, and a beam delivery system to the three medical treatment rooms and to the research irradiation room.
J, Lettry   +3 more
openaire   +2 more sources

Extraction of ions and electrons from audio frequency plasma source

open access: yesAIP Advances, 2016
Herein, the extraction of high ion / electron current from an audio frequency (AF) nitrogen gas discharge (10 – 100 kHz) is studied and investigated.
N. A. Haleem   +2 more
doaj   +1 more source

Improved Methodology to Estimate the Power Transfer Efficiency in an Inductively Coupled Radio Frequency Ion Source

open access: yesIEEE Access, 2018
The International Thermonuclear Experimental Reactor neutral beam injector includes an ion source which can produce D ion beams for 1 h, accelerated at the energy of 1 MeV.
Palak Jain   +5 more
doaj   +1 more source

Simulation and analysis of solenoidal ion sources [PDF]

open access: yes, 2008
We present a detailed analysis and simulation of solenoidal, magnetically confined electron bombardment ion sources, aimed at molecular beam detection. The aim is to achieve high efficiency for singly ionized species while minimizing multiple ionization.
A. P. Jardine   +9 more
core   +1 more source

System for Measuring Emittance Characteristics of Ion Sources

open access: yesEast European Journal of Physics, 2020
To determine the emittance characteristics of the ion sources, a measurement system has been developed using an electrostatic scanner scheme. The article presents the results of testing system performance.
Vitalii I. Voznyi   +5 more
doaj   +1 more source

EXPERIMENTAL CHARACTERIZATION OF AN OVERDENSE PLASMA IN A COMPACT ION SOURCE

open access: yesActa Polytechnica, 2015
Electron Cyclotron Resonance Ion Sources (ECRIS) are compact plasma-based machines able to feed particle accelerators with high intensity beams of multi-charged ions. ECRIS plasmas are density-limited, since they are sustained by E.M. wave propagation up
Giuseppe Castro   +13 more
doaj   +1 more source

Enhancing ion extraction with an inverse sheath in negative hydrogen ion sources for NBI heating

open access: yesNuclear Fusion, 2023
Negative hydrogen ion (H ^− ) sources employed in neutral beam injection (NBI) systems are subject to extraction efficiency issues due to the considerable volumetric losses of negative hydrogen ions.
Guang-Yu Sun   +9 more
doaj   +1 more source

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