Study of organic contamination induced by outgassing materials. Application to the Laser MégaJoule optics - Archive ouverte HAL Access content directly
Journal Articles Applied Surface Science Year : 2014

Study of organic contamination induced by outgassing materials. Application to the Laser MégaJoule optics

(1) , (1) , (1) , (1)
1

Abstract

Organic contamination may decrease the targeted performances of coated surfaces. To study the contamination induced by surrounding materials, a method using a thermal extractor is presented in the first part of this work. Besides its normal operation (analyses of outgassing compounds from a material), this device is used in an original way to contaminate and decontaminate samples. Efficiency of contamination and decontamination protocols are assessed by automated thermal desorption and gas chromatography coupled with mass spectrometry and by secondary ion mass spectrometry coupled with a time of flight mass analyzer. This enables to study the contamination induced by a bulk material outgassing and to take in consideration the possible competition between outgassed species. This method is then applied to investigate contamination of Laser MégaJoule sol–gel coated optics by a retractable sheath. The impact of the temperature on the outgassing of the sheath has been highlighted. Increasing temperature from 30 to 50 • C enables the outgassing of organophosphorous compounds and increases the outgassing of oxy-genated compounds and phthalates. Chemical analyses of contaminated optics have highlighted affinities between the sol–gel coating and phthalates and organophosphorous, and low affinities with aromatics and terpens. Finally, samples with increasing levels of contamination have been realized. However a saturation phenomenon is observed at 90 ng cm–2 .
Fichier principal
Vignette du fichier
1-s2.0-S0169433213024057-main.pdf (769.89 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

cea-01692810 , version 1 (25-01-2018)

Identifiers

Cite

Jérôme Neauport, O. Favrat, B. Mangote, I. Tovena-Pécault. Study of organic contamination induced by outgassing materials. Application to the Laser MégaJoule optics. Applied Surface Science, 2014, 293, pp.132-137. ⟨10.1016/j.apsusc.2013.12.116⟩. ⟨cea-01692810⟩

Collections

CEA
22 View
922 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More