OPTICAL DETECTION OF TRACER GASES IN A GAS DISCHARGE CELL HAVING UNEXPOSED ELECTRODES

• Main Authors: SCHWARTZ, Vladimir, CHERNODBROD, Boris
• Format: Patent
• Language: English; French; German
• Published: 22.08.2018
• Subjects: ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

Tracer gas sensing device comprising a gas discharge cell having cell walls defining a discharge volume and a tracer gas inlet into the discharge volume, an optical spectrometer arrangement having a radiation source on a first side of the discharge cell for emitting radiation into the discharge cell and a radiation detector on a second side of the discharge cell opposite to the first side for detecting radiation which was emitted by the radiation source through the discharge volume, and electrodes on opposing sides of the discharge cell for generating a plasma within the discharge cell, said electrodes being unexposed plasma electrodes. The discharge cell may be a dielectric barrier discharge cell and the electrodes may be powered by an AC power source.