Search results for "ECR ion sources"

showing 6 items of 6 documents

First experiments on applying the gasdynamic ECR ion source for negative hydrogen ion production

2017

This article has no abstract. peerReviewed

010302 applied physicsHydrogen ionta114ChemistryPhysicsQC1-99901 natural sciencesIon source010305 fluids & plasmasECR ion sourcesChemical physics0103 physical sciencesAtomic physicshydrogen ionsEPJ Web of Conferences
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Electron cyclotron resonance ion sources – physics, technology and future challenges

2017

This article has no abstract. peerReviewed

010302 applied physicsPhysicsECR ion sourcesta114Physics::Plasma PhysicsPhysicsQC1-9990103 physical sciences01 natural sciencesEngineering physicsElectron cyclotron resonance010305 fluids & plasmasIonEPJ Web of Conferences
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Breakdown transient study of plasma distributions in a 2.45 GHz hydrogen discharge

2015

Plasma distribution transients associated with the breakdown of a 2.45 GHz hydrogen discharge similar to high current microwave ion sources are studied by means of an ultra-fast frame image acquisition system in visible light range. Eight different plasma distributions have been studied by photographing the 2D projections of the discharge through a transparent plasma electrode. The temporal evolution of images in Balmer-alpha and Fulcher band wavelengths have been recorded associated to atomic and molecular excitation and ionization processes. Some unexpected plasma distributions transient behaviors during breakdown are reported.

PhysicsNuclear and High Energy Physicsta114Hydrogenchemistry.chemical_elementPlasmaPlasma diagnosticsIonECR ion sourceschemistryPhysics::Plasma PhysicsIonizationECR plasma breakdownPlasma diagnosticsAtomic physicsInstrumentationMicrowaveExcitationVisible spectrumNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Powerful neutron generators based on high current ECR ion sources with gyrotron plasma heating

2017

This article has no abstract. peerReviewed

Physicsta114Plasma heatingbusiness.industryPhysicsQC1-999Nuclear engineeringElectrical engineering01 natural sciences010305 fluids & plasmasIonlaw.inventionECR ion sourcesneutron generatorsNeutron generatorlawGyrotron0103 physical sciencesHigh current010306 general physicsbusinessEPJ Web of Conferences
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Photoelectron emission experiments with ECR-driven multi-dipolar negative ion plasma source

2017

Photoelectron emission measurements have been performed using a 2.45 GHz ECR-driven multi-dipolar plasma source in a low pressure hydrogen discharge. Photoelectron currents induced by light emitted from ECR zone and H− production region are measured from Al, Cu, Mo, Ta, and stainless steel (SAE 304) surfaces as a function of microwave power and neutral hydrogen pressure. The total photoelectron current from the plasma chamber wall is estimated to reach values up to 1 A for 900 W of injected microwave power. It is concluded that the volumetric photon emission rate in wavelength range relevant for photoelectron emission is a few times higher in arc discharge. peerReviewed

plasma sourcesta114HydrogenWavelength rangeChemistryPhysics::Instrumentation and DetectorssyklotronitMicrowave powerAnalytical chemistrychemistry.chemical_elementPlasmaplasmatekniikkaelektronitIonElectric arcECR ion sourcesDipolePhysics::Plasma PhysicsPhysics::Atomic and Molecular ClustersphotoelectronsCurrent (fluid)Atomic physicsemissio (fysiikka)
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VUV emission spectroscopy combined with H- density measurements in the ion source Prometheus I

2016

“Prometheus I” is a volume H− negative ion source, driven by a network of dipolar electron cyclotron resonance (ECR; 2.45 GHz) modules. The vacuum-ultraviolet (VUV) emission spectrum of low-temperature hydrogen plasmas may be related to molecular and atomic processes involved directly or indirectly in the production of negative ions. In this work, VUV spectroscopy has been performed in the above source, Prometheus I, both in the ECR zones and the bulk (far from ECR zones and surfaces) plasma. The acquired VUV spectra are correlated with the negative ion densities, as measured by means of laser photodetachment, and the possible mechanisms of negative ion production are considered. The well-e…

plasmatekniikka01 natural sciences7. Clean energySpectral lineElectron cyclotron resonance010305 fluids & plasmasIonPhysics::Plasma Physics[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]0103 physical sciencesPhysics::Atomic and Molecular ClustersultraviolettisäteilyEmission spectrumvacuum-ultraviolet emissionSpectroscopy010302 applied physicsplasma sourcesta114ChemistrysyklotronitPlasmaIon sourceECR ion sourcesExcited stateAtomic physicsemissio (fysiikka)
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