Neutral oxygen atom density in the MESOX air plasma solar furnace facility |
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Authors: | Marianne Balat-Pichelin Alenka Vesel |
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Institution: | 1. CNRS-PROMES, Laboratoire Procédés, Matériaux et Energie Solaire, UPR 8521, 7 rue du four solaire, F-66120 Font Romeu, Odeillo, France;2. Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia |
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Abstract: | The density of neutral oxygen atoms in the MESOX set-up, one device of the PROMES-CNRS solar facilities, was determined by a fiber-optics catalytic probe (FOCP). Plasma was created in a flowing air within a quartz tube with the outer diameter of 5 cm by a 2.45 GHz microwave generator with the output power up to 1000 W. The flow of air was varied between 4 and 20 l/h. The O-atom density was found to increase monotonously with the increasing discharge power, and it decreased with the increasing flow rate. The degree of dissociation of oxygen molecules in the plasma column depended largely on the flow rate. At the air flow of 4 l/h it was about 80% but it decreased to about 20% at the flow of 20 l/h. |
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Keywords: | Air plasma Plasma characterization O-atom density Degree of dissociation Catalytic probe (FOCP) Solar furnace |
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