Liquid ion chamber electrode apparatus

H - Electricity – 01 – J

Patent

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H01J 47/02 (2006.01) G01T 1/185 (2006.01)

Patent

CA 2204794

The present invention provides electrode assemblies for LIC imagers that maximize ion collection and the electric field for the minimum bias voltage. To achieve this optimization the ion collection is confined to small regions. Due to this limited ion collection region, high neutralization efficiencies and fast sweep-out times can be obtained. Furthermore, with an electrode separation of approximately 0.1 millimeters, pulse voltages of less than 100 volts can be used. Low voltages result in improved reliability, longer system life, and lower safety risks.

La présente invention est constituée par des ensembles d'électrodes pour imageurs à chambre d'ionisation qui maximisent la capture des ions et le champ électrique pour minimiser la tension de polarisation. Afin d'obtenir cette optimisation, la capture des ions est confinée à de petites régions. En raison de la petitesse des régions de capture d'ions, on peut obtenir un rendement de neutralisation élevé et un balayage rapide. De plus, avec une séparation d'environ 0,1 mm entre les électrodes, on peut utiliser des tensions d'impulsion inférieures à 100 volts, ce qui améliore la fiabilité, allonge la durée de vie du système et réduit les risques pour la sécurité.

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