Variable profiles of plasma pulses generated from high-k dielectric barrier discharge

Bentefour, E.H. and Bastiaens, H.M.J. and Hofstra, R.M. (2006) Variable profiles of plasma pulses generated from high-k dielectric barrier discharge. Europhysics Letters, 74 (5). pp. 847-853. ISSN 0295-5075

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Abstract:	With a specific design of a high-k dielectric barrier discharge, we observed plasma pulses with variable spatial profiles as a consequence of excitation by a high-voltage pulse at different pressures. The dependence of the profile of the generated plasma pulses on the charging voltage and the operating gas (air) pressure is described and the description of their temporal and spatial build-up mechanism is given. We demonstrate that the profile variation of the plasma pulses is caused by the co-existence of dipole switching-based electron emission and field electron emission from triple junctions. Finally, we propose a scheme describing the interaction of these two electron emission mechanisms that leads to the pressure dependence of plasma pulse profile.
Item Type:	Article
Copyright:	© 2006 IOP Science
Faculty:	Science and Technology (TNW)
Research Group:	Laser Physics and Nonlinear Optics (LPNO)
Link to this item:	http://purl.utwente.nl/publications/61319
Official URL:	http://dx.doi.org/10.1209/epl/i2006-10037-5
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