| 摘要 |
1. Gas discharge tube with high current density for laser emission at very high emission stability including an ionisation chamber (1) formed by a tubular element provided with a central circular opening, comprising - a heat exchanger (2) including cooling fins (161, 162, 16p) arranged on the external wall of the ionisation chamber (1), - an internal envelope (3) surrounding said cooling fins (161, 162, 16p) and enabling in operation, the circulation of a heat transporting fluid between said internal envelope (3) and the external wall of the ionisation chamber (1), - a gas recirculation circuit (4) including a plurality of basic recirculation circuits (41, 42, 4p) each exhibiting a resistance to gas flow greater than that of the ionisation chamber (1), - an anode (5) with high current density stability permitting transmission of the laser beam, characterized in that - the tubular element forming the ionisation chamber (1) is formed by a joined stacking of concentric metallic elements (15) each comprising a circular central opening (150) and a plurality of radial projections (151, 152, 15p) forming said fins, and in that - the basic recirculation circuits (41, 42, 4p) are arranged at the exterior of the internal envelope (3). |
