0000000000741715

AUTHOR

Peeter Paris

showing 3 related works from this author

Detection of deuterium retention by LIBS at different background pressures

2017

ITER plans foresee the quantitative diagnostics of fuel retention in reactor walls at near-atmospheric pressures. Using laser induced breakdown spectroscopy (LIBS) for this purpose assumes a reliable resolving of Balmer α-lines of hydrogen isotopes in spectra of plasma produced by focused laser radiation onto the target surface. To develop LIBS for quantitative diagnostics of fuel retention during the maintenance breaks of ITER, the effect of background gas pressure on the laser-induced plasma characteristics has been studied. The background pressure limits the expansion rate of plasma and as a result it leads to higher plasma concentrations. At the same time the limiting factor of the reso…

Materials scienceLaser induced plasmaHydrogenHydrogen isotopeAtomic emission spectroscopychemistry.chemical_elementLaser induced breakdown spectroscopy01 natural sciencesSpectral line010305 fluids & plasmaslaw.inventionSignal-to-noise ratio decreasesymbols.namesakeLaser diagnosticsNuclear reactorsIsotopeslaw0103 physical sciencesBackground pressureLaser-induced breakdown spectroscopyLaserinduced breakdown spectroscopy (LIBS)010306 general physicsPlasma concentrationMathematical PhysicsSignal to noise ratioAtmospheric pressureSignal to noise ratio Background pressureAtomic emission spectroscopyPlasmaSignal-to-noise ratio decrease Laser produced plasmasCondensed Matter PhysicsLaserAtomic and Molecular Physics and OpticschemistryStark effectDeuterium retentionElectron concentrationsymbolsLaser produced plasmasAtmospheric pressureAtomic physicsPhysica Scripta
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Comparison of LIBS results on ITER-relevant samples obtained by nanosecond and picosecond lasers

2019

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement number 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. Work performed under EUROfusion WP PFC.

Nuclear and High Energy PhysicsMaterials scienceMaterials Science (miscellaneous)chemistry.chemical_element01 natural sciences010305 fluids & plasmaslaw.inventionPulsed laser depositionsymbols.namesakeLIBS diagnosticslaw0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Temperature of laser-produced plasmaLaser-induced breakdown spectroscopyta216010302 applied physicsArgonta114Pulse durationNanosecondLaserlcsh:TK9001-9401Nuclear Energy and EngineeringchemistryStark effectPicosecondITER-relevant coatingssymbolslcsh:Nuclear engineering. Atomic powerDetection of hydrogen isotopesElemental depth profilesAtomic physicsNuclear Materials and Energy
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Plasma-wall interaction studies within the EUROfusion consortium: Progress on plasma-facing components development and qualification

2017

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

plasma-facing components ; plasma-surface interaction ; power exhaust ; particle exhaust ; tungsten ; berylliumNuclear and High Energy PhysicstungstenNuclear engineeringPlasma surface interactionparticle exhaustplasma-facing components01 natural sciences114 Physical sciences010305 fluids & plasmas0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]ddc:530beryllium; particle exhaust; plasma-facing components; plasma-surface interaction; power exhaust; tungsten; Nuclear and High Energy Physics; Condensed Matter Physics010306 general physicsplasma-surface interaction;particle exhaust;tungsten;beryllium;power exhaust;plasma-facing componentspower exhaustPhysicsPlasma16. Peace & justiceberylliumCondensed Matter PhysicsInteraction studiesEnvironmental science[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]plasma-surface interaction
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