| http://www.w3.org/ns/prov#value | - In a manner such as is suggested in FIG. 1 of the aforementioned published article in Applied Physics, the discharge space 6 between the electrode 3 and the dielectric wall 5 is filled with a filler gas which emits UV radiation under discharge conditions, e.g. mercury vapor, a noble gas, a noble-gas/metal-vapor mixture or a noble-gas/halogen mixture and, if necessary or desirable, an additional no
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