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(a) Schematic of the experimental setup; (b) photo of the planar DBD plasma jet.
Typical wave forms of the applied voltage (red dashed line) and the discharge current (blue solid line). The amplitudes of the applied voltages on the gas flow are (a) 6.5 kV and (b) 7.3 kV, respectively.
Relative optical emission spectra for different locations along the axis. The supplied voltage amplitude is 7.3 kV. The base lines are shifted in order to distinguish these spectra.
Distributions of emission 337 nm intensities (dashed lines) and gas flow velocities (solid lines) along the transverse direction ( direction) with different locations. The voltage amplitude is 7.3 kV.
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