Abstract: A fluid treatment plant, particularly a water disinfection plant, having more efficient energy utilization and increased service life in discontinuous operation, is producible as a simple mass-production product, that can be handled easily and is particularly suitable for household use. UV emitters are avoided that are complicated or that cannot be operated without danger, such as DBD lamps with coaxial tubes, as well as complicated ballast devices, and dangerous electrical constructions. Fluid raw materials are converted with UV radiation into qualitatively superior or novel products, in that a fluid to be treated is brought into contact with the emitter, so that the fluid is irradiated with UV radiation and has a direct influence on the temperature of the emitter, in particular it sets the operating temperature of the emitter between 0° C. and 30° C.

Abstract: In an excimer radiator, especially an UV radiator with dielectrically impeded discharge, a first electrode is applied in a discharge chamber sealed from the ambient atmosphere onto an elongated support which, as seen in a radial direction from its longitudinal axis, is surrounded by a discharge vessel of quartz defining the discharge chamber; on the outside of the discharge vessel a second electrode is disposed which is permeable to at least a portion of the radiation produced in the discharge chamber.

Abstract: A discharge lamp for dielectrically impeded discharge has a discharge vessel substantially in the form of a hollow cylinder whose discharge chamber is separated from at least one electrode by a dielectric; on the outer surface of the discharge chamber a spiral-shaped electrode in the form of a ribbon is disposed, which permits rays to pass through it, while on the outer surface of the discharge vessel facing inward toward the cylinder axis a second electrode is provided which is at least partially surrounded by the hollow-cylindrical surface. The surface covered by the first electrode corresponds to no more than 10% of the external surface of the discharge chamber.

Abstract: A discharge lamp having a discharge space is bounded by an external tube formed of dielectric material and by an internal tube formed of dielectric material. An external electrode is arranged proximate the external tube, and an internal electrode rests against the internal tube. The internal electrode is formed from an elastic spiral band having an external diameter that is greater than the internal diameter of the internal tube when the elastic spiral band is not compressed.

Abstract: The invention relates to an excimer lamp with a discharge chamber which holds a halogen-containing filling gas forming excimers under discharge conditions. Known excimer lamps have only a short burning life. In order to provide an excimer lamp with a long burning life, it is proposed according to the invention that the halogen content of the discharge chamber be a minimum of 1.times.10.sup.-10 mol/cm.sup.3 volume of the discharge chamber per cm.sup.2 of the discharge chamber interior surface area. To manufacture such a long-life excimer lamp, the interior surfaces of the discharge chamber may be treated with a halogen-containing passivating gas prior to filling in the filling gas or the required amount of halogen can be included in the filing gas.