A process for the production of quartz glass doped with nitrogen as well as for performing the method suitable silica grain

In a known method for the production of quartz glass doped with nitrogen, a SiO Proceeding from a method is indicate by means of the quartz glass in a nitrogen doping with a high proportion of chemically bound nitrogen is achievable. This object is inventively achieved in that a nitrogen oxide is used as a nitrogen-containing reaction gas. The particularly suitable for carrying out this method, silica grain is characterized in that it contains