in this work,weinvestigatethedamageproducedinmaterialswhenexposedtoalaser-generatedplasma.Theplasmawasgeneratedbyinteractionofahigh-intensitylaserwithOxygen.WedemonstratethatthestressinducedonthetargetsurfaceofaTantalumtarget(typicalmaterialsusedasPlasmaFacingMaterial)after10hofplasmaexposureisequivalenttothestressinducedduring1hofconventionallaserablationusingapulsed0.5Jlaser.Inbothcasesweobtainasurfaceerosioninthetensofm,andachangeinthesurfaceroughnessinthetensofnmforthestressedmaterials.Theerosionrateof1nm/s,explainedintermsofsurfacefragmentationatthermodynamicequilibrium,generatesaslowdamagetothematerialsexposedtotheplasma.Ourmethodallowsindicatingsafetyparametersforthemaintenanceofmaterialsusedinhigh-intensitylaserexperiments

Analysis of induced stress on materials exposed to laser-plasma radiation during high-intensity laser experiments / Sciscio', Massimiliano; Barberio, M.; Liberatore, C.; Veltri, Salvatore; Laramée, A.; Palumbo, Luigi; Legaré, F.; Antici, Patrizio. - In: APPLIED SURFACE SCIENCE. - ISSN 0169-4332. - STAMPA. - (2017), pp. 1-5. [10.1016/j.apsusc.2016.12.004]

Analysis of induced stress on materials exposed to laser-plasma radiation during high-intensity laser experiments

SCISCIO', MASSIMILIANO;VELTRI, SALVATORE;PALUMBO, Luigi;ANTICI, PATRIZIO
2017

Abstract

in this work,weinvestigatethedamageproducedinmaterialswhenexposedtoalaser-generatedplasma.Theplasmawasgeneratedbyinteractionofahigh-intensitylaserwithOxygen.WedemonstratethatthestressinducedonthetargetsurfaceofaTantalumtarget(typicalmaterialsusedasPlasmaFacingMaterial)after10hofplasmaexposureisequivalenttothestressinducedduring1hofconventionallaserablationusingapulsed0.5Jlaser.Inbothcasesweobtainasurfaceerosioninthetensofm,andachangeinthesurfaceroughnessinthetensofnmforthestressedmaterials.Theerosionrateof1nm/s,explainedintermsofsurfacefragmentationatthermodynamicequilibrium,generatesaslowdamagetothematerialsexposedtotheplasma.Ourmethodallowsindicatingsafetyparametersforthemaintenanceofmaterialsusedinhigh-intensitylaserexperiments
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/962348
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