| 摘要 |
PURPOSE:To obtain a required wind speed and to make the laser device compact, by making the pressure on air blowing side high and the pressure on air exchausting side low by using a principle of jet. CONSTITUTION:A medium gas, which is highly pressurized by a compressor 8, is jetted through a minute opening in a duct connected to a laser head 6. At the contact surface of a duct 11 on the air blowing side and a the laser head 6, the minute opening comprising a slit 12 or hole is provided. The medium gas is sent to the gap between discharge electrode 1 at a supersonic speed or at the required speed under the pressure in the duct 11 on the air blowing side owing to the width of the slit 12. Meanwhile the gas on the exhausting side is sucked by the compressor and the pressure is reduced. The wind speed corresponds to a ratio P1/P2, where P1 is a pressure from the minute opening part provided at the laser head part to the compressor and P2 is a pressure at the laser head part where the discharge electrodes are provided. The magnitudes of P1 and P2 depend on the capacity of the compressor, the size of the minute opening part, and the volume of the duct to which the laser head is connected. |
