Results 211 to 220 of about 4,784,253 (254)
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Review of Scientific Instruments, 1994
A low energy neutral lithium beam source with energy about 6 keV and a neutral beam equivalent current of 20 μA/cm2 has been developed in ASIPP in order to measure the density gradient and the fluctuations in the edge plasma of the HT-6M tokamak. In the source, lithium ions are extracted from a solid emitter (β-eucryptite), focused in a two-tube ...
Liqun Hu
exaly +2 more sources
A low energy neutral lithium beam source with energy about 6 keV and a neutral beam equivalent current of 20 μA/cm2 has been developed in ASIPP in order to measure the density gradient and the fluctuations in the edge plasma of the HT-6M tokamak. In the source, lithium ions are extracted from a solid emitter (β-eucryptite), focused in a two-tube ...
Liqun Hu
exaly +2 more sources
Fusion Engineering and Design, 2015
In ITER, each heating neutral beam injector (HNB) will deliver about 16.5 MW heating power by accelerating a 40 A deuterium negative ion beam up to the energy of 1 MeV. The ions are generated inside a caesiated negative ion source, where the injected H2/D2 is ionized by a radio frequency electromagnetic field.
Diego Marcuzzi +2 more
exaly +4 more sources
In ITER, each heating neutral beam injector (HNB) will deliver about 16.5 MW heating power by accelerating a 40 A deuterium negative ion beam up to the energy of 1 MeV. The ions are generated inside a caesiated negative ion source, where the injected H2/D2 is ionized by a radio frequency electromagnetic field.
Diego Marcuzzi +2 more
exaly +4 more sources
Model of Positive Ion Sources for Neutral Beam Injection
Journal of Applied Physics, 1983A comprehensive model is presented to describe the physics of positive ion sources used to generate hydrogen isotope neutral beams for the heating of confined plasma in magnetic fusion energy programs. The model considers 11 important atomic and molecular reactions.
William S Cooper
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Modified Perveance Law for Neutral‐Beam Ion Sources
Review of Scientific Instruments, 1989The perveance law for ion sources is modified based on experimental data gained during the conditioning phase of three multiaperture ion sources for neutral-beam injection into TEXTOR. The ion sources are modified JET PINIs with a three-grid accel-decel extraction system designed for 55 kV, 88 A, 4.8 MW, operated in hydrogen.
R Uhlemann
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High-flux beam source of fast neutral helium
Review of Scientific Instruments, 1978A high-flux beam source of fast neutral helium has been constructed by extending the designs of previous authors. The source is a dc or pulsed electric discharge in an expanding gas nozzle. The beam produced has a flux on the order of 1015 atoms/s sr and a mean velocity on the order of 107 cm/s.
D W, Fahey, L D, Schearer, W F, Parks
openaire +2 more sources
The periplasmatron, An ion source for intense neutral beams
Nuclear Instruments and Methods, 1976Abstract An intense fast hydrogen atom beam of 300 kW power has been obtained with a new type of ion source, the periplasmatron. Source and neutral beam operation parameters are given.
M. Fumelli, F.P.G. Valckx
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Microwave plasma source as an ion beam neutralizer
Review of Scientific Instruments, 2004A 13.56 MHz radio-frequency (rf) driven multicusp ion source has been developed at the Fast Neutron Research Facility. An argon ion current density of 29 mA cm−2 can be obtained for argon gas at a pressure of 0.4 Pa, rf power of 500 W and extraction voltage of 3 kV.
M. Medhisuwakul +3 more
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CONDITIONING OF THE JET NEUTRAL BEAM SOURCES
1989The JET beam sources require several hundred beam pulses for conditioning up to 80 kV or 160 kV. Once conditioned, only some 30 pulses are required to recondition the sources after a shutdown of several weeks with the beam sources vented with atmospheric air.
H.D. Falter +3 more
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Fabrication of extractor grids for neutral beam sources
Review of Scientific Instruments, 1982The fabrication of tungsten wires for use in extractor grids on neutral beam ion sources is described. The tungsten wires are machined from 0.152-cm-diam tungsten wires into triangular wires by a three-step grinding process. These grid wires have been used in the neutral beam sources for Phaedrus (6 keV beams) and for the Wisconsin Levitated Octupole ...
D. A. Brouchous, J. R. Conrad
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Calibration of a neutral particle beam source with the novel Absolute Beam Monitor
2021<p>The energetic neutral atom detection instrument IMAP-Lo is part of the scientific payload of the upcoming Interstellar Mapping and Acceleration Probe (IMAP) mission by NASA and is designed to analyse interstellar neutral and heliospheric Energetic Neutral Atom fluxes and their composition for energies from 1000 eV down to 10& ...
Gasser, Jonathan +2 more
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