Abstract
Density of neutral oxygen atoms in the ground state has been measured during treatment of wool fabric samples. Samples were placed in an afterglow reactor with a volume of about 5 l, which was pumped with a two stage rotary pump with the nominal pumping speed of 28 m3/h. The source of the oxygen atoms was a microwave discharge operating in the surfatron mode at 2.45 GHz and adjustable output power up to 300 W. The density of O-atoms in the afterglow chamber was measured with a fiber-optics catalytic probe. For the empty reactor, the O density depended on discharge parameters and was between 0.8 and 2.8 × 1021 m−3 at 40 and 50 Pa respectively. During the treatment of wool, the O density depended largely on the exposure time. For untreated samples, the O density was below the detection limit of the probe, while prolonged treatment allowed for recovering the O density. The recovery always occurred after having submitted wool samples to the dose of the order of 1023 atoms/m2. The results were explained by oxidation of the thin lipid layer on the surface of the wool fibres.
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Acknowledgements
The research was partially supported by Slovenian-French Proteus project (Grant no. BI-FR-06-006). The authors would like to acknowledge the French Ministère de l’Education Nationale de la Recherche et de la Technologie for the post-doc grant of C.Canal
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Canal, C., Gaboriau, F., Ricard, A. et al. Density of O-atoms in an Afterglow Reactor During Treatment of Wool. Plasma Chem Plasma Process 27, 404–413 (2007). https://doi.org/10.1007/s11090-007-9078-y
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DOI: https://doi.org/10.1007/s11090-007-9078-y