On the excitation mechanism of the oxygen laser in a fast plasmamixing device |
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Abstract: | A flowing hollow cathode rare gas plasma crossed with an oxygen (O 2) beam was used to operate an atomic oxygen laser at 8446.7 Å. Laser action based on energy transfer collisions was accomplished only with pure helium plasmas. With additions of 0.2% neon or 0.1% argon to the helium plasma, the laser ceased to operate and fluorescence was reduced. No fluorescence was observed if other O donors such as CO, CO2, or N2O were used. The excitation mechanisms for different O donor and rare gas combinations and different excitation methods are discussed |
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