| 摘要 |
In order to increase the power density of the electric discharge in apparatus producing a laser-active state in a fast subsonic flow comprising a flow channel (1), a first electrode pair having dielectric electrodes (4, 5) disposed opposite one another in the wall region of the flow channel and a second electrode pair, the electrodes (9) and (10) of which are arranged upstream and downstream of the discharge in the flow channel, the electrodes of the first electrode pair being connected to a HF voltage source (21), the electrodes (9, 10) are connected to a second HF voltage source (22) and comprise a plurality of individual dielectric electrodes distributed over the cross section of the flow channel which each comprise a metallic core surrounded on all sides by a dielectric material. <IMAGE> |
