A process is described as well as a device for the controlled damping combustion-driven vibrations in a fluid-flow prime mover with a burner system, the at least one burner is provided, in the, by means of at least one burner nozzle arranged centrally in the burner fuel is introduced, the combustion air flowing into the burner to form a fuel - / air mixture is mixed in a, at the burner system subsequent combustion chamber is ignited. Dollars a the invention is characterised in that the fuel nozzle in the form of a burner lance is formed, on the lance end a fuel discharge into the burner takes place, and that the burner lance at least to a third of the axial length of the burner projects into the burner.
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