Abstract:
A device for detecting and locating radiations, comprising at least one cathode brought to a first potential with respect to a reference potential in a sealed enclosure, a plurality of threadlike anodes insulated from one another and photosensitive means, said enclosure being provided with a port-hole transparent to the radiations involved, situated in register with said cathode and anodes, said device further comprising an insulating support with two faces, a portion of one of said two faces, situated in register with said port-hole, being coated with a layer of a conductive material forming a mesh network constituting said cathode, the extremities of said anodes being in the shape of a point and the axes of said anodes respectively coinciding with the axes of the meshes of said network, these points being recessed with respect to the insulating support face, coated with the network conductive meshes.
Abstract:
An ultraviolet sensitive gaseous discharge detector has an essentially uniform 360* angular sensitivity. The detector has first and second anodes and a cathode which are aligned in a common plane. The first and second anodes have elongated crosssections, with the elongated surfaces of the first and second anodes being aligned essentially parallel to the common plane. The cathode has an essentially circular cross-section and is disposed between the first and second anodes.