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Fig. 5 | EPJ Techniques and Instrumentation

Fig. 5

From: Methods of gas purification and effect on the ion composition in an RF atmospheric pressure plasma jet investigated by mass spectrometry

Fig. 5

Time-resolved measurement showing the significant effect of two purification methods (molecular sieve trap at t=60 s and liquid nitrogen trap at t=180 s) applied to the feed gas line of the μ-APPJ operated at a gas flow rate of 1.4 slm He and an admixture of 0.25 % N2. The admixture of nitrogen is mandatory for stable operating conditions

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