Liu_Shi_Kong_APL_2007.pdf (181.42 kB)
Download fileElectron trapping in radio-frequency atmospheric-pressure glow discharges
journal contribution
posted on 2009-08-21, 08:42 authored by D.W. Liu, J.J. Shi, Michael G. KongIn this letter, the authors present experimental evidence of electron trapping in radio-frequency rf
atmospheric-pressure glow discharges. By linking electron density to nanosecond plasma images
and optical emission spectroscopy, they show that electron trapping occurs under most discharge
conditions. The level of electron trapping increases with increasing discharge current or/and
increasing excitation frequency, and manifests itself in the change of the differential conductivity at
the point of the gas breakdown. Finally, they demonstrate that electron trapping is largely related to
whether the half rf period is shorter than the electron transition time across the electrode gap.
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