Optische Vorrichtung zur in-situ-Detektion von Spuren gasförmigen Wasserstoffs in einer Tieftemperaturumgebung

The sensor has a palladium micromirror (11), deposited as a film at one end of an optical fiber (12). A light source (14) emits light of a predetermined wavelength to the other end of the optical fiber. A light sensor modifies the light after its passage through the mirror, and the variation in inte...

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Bibliographische Detailangaben
Hauptverfasser:	BEVENOT, XAVIER, CLEMENT, MICHEL, GAGNAIRE, HENRI
Format:	Patent
Sprache:	ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The sensor has a palladium micromirror (11), deposited as a film at one end of an optical fiber (12). A light source (14) emits light of a predetermined wavelength to the other end of the optical fiber. A light sensor modifies the light after its passage through the mirror, and the variation in intensity is used to determine the hydrogen concentration. A local heater maintains the micromirror in the alpha phase of the palladium, by radiation,. The light sensor is arranged in the cryogenic temperature environment.