CHAMBRE D'IONISATION

A.CHAMBRE D'IONISATION COMPRENANT UNE PLURALITE D'ELECTRODES CYLINDRIQUES DISPOSEES COAXIALEMENT ET UN BOITIER QUI ENFERME LES ELECTRODES CYLINDRIQUES.B.LES ELECTRODES CYLINDRIQUES SONT DISPOSEES DANS LE BOITIER DE FACON A PERMETTRE UN DEPLACEMENT AXIAL DES EXTREMITES DES ELECTRODES MAIS A EMPECHER UN DEPLACEMENT RADIAL DE CELLES-CI, CE QUI PERMET DE MINIMISER UNE DEVIATION RELATIVEMENT MINIME DES PIECES A DES TEMPERATURES ELEVEES.C.APPLICATIONS COURANTES. An ionization chamber comprises a plurality of cylindrical electrodes which are coaxially arranged, and a casing which holds the cylindrical electrodes in it under the condition allowing the axial shifting of the edges of the cylindrical electrodes but preventing the radial shifting of the cylindrical electrodes whereby the slight relative deviation of parts for the ionization chamber can be minimized during use at high temperature or during a severe thermal cycle.