Effects of gas flow rate on the length of atmospheric pressure nonequilibrium plasma jets

Qing Li; Jiang-Tao Li; Wen-Chao Zhu; Xi-Ming Zhu; Yi-Kang Pu
October 2009
Applied Physics Letters;10/5/2009, Vol. 95 Issue 14, p141502
Academic Journal
Effects of gas flow rate on the length of atmospheric pressure plasma jets have been investigated using a capillary dielectric barrier discharge configuration. For the discharge in only downstream region, three distinguishable modes of plasma jet length versus argon gas flow rate, namely, laminar, transition, and turbulent jet mode, have been identified. For the case of discharge in both downstream and upstream regions, the curve of length versus flow rate has significant “dent” in the laminar jet mode for pure helium, neon, and argon flow gas spraying into air ambient.


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