Abstract
The non-chain reaction HF laser energized by an x-ray photo- triggered discharge has been studied for Ne/SF 6 /C 2 H 6 and Ne/SF 6 /H 2 gas mixtures. For an active volume of 312 cm 3 , a high specific output energy of 10 J/l has been reached with an electric efficiency of 4.7% for the mixture with ethane, whereas only 6 J/l is obtained with an efficiency of 3.1% for the mixture with hydrogen. It is shown that discharge instabilities are responsible for the laser emission disruption in the case of the H 2 -mixture. However, addition of C 2 H 6 to Ne/SF 6 , in place of H 2 , induces the discharge stabilization. The higher laser performance obtained with the C 2 H 6 -mixture, compared with the performance of the H 2 -mixture, is a direct consequence of this stabilization effect.
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