Revealing an intermediate region between the collisional radiofrequency plasma bulk and its sheath

J. Beckers, D. J. M. Trienekens, and G. M. W. Kroesen
Phys. Rev. E 91, 033109 – Published 18 March 2015

Abstract

Experimental evidence of the existence of an intermediate region between a capacitively coupled plasma and the collisional space-charge region at its borders is presented. This proof is generated by monitoring—in an airplane carrying out parabolic flights—the trajectory of plasma-confined microparticles. Based on only primary data and without the need for a sophisticated model, our analysis concludes a sharply marked transition from the sheath region into another region with a significantly lower—yet nonzero—space-charge density, i.e., a region which is often called the presheath.

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  • Received 25 June 2014
  • Revised 13 October 2014

DOI:https://doi.org/10.1103/PhysRevE.91.033109

©2015 American Physical Society

Authors & Affiliations

J. Beckers, D. J. M. Trienekens, and G. M. W. Kroesen

  • Department of Applied Physics, Eindhoven University of Technology, P.O. box 513, 5600 MB, Eindhoven, the Netherlands

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Issue

Vol. 91, Iss. 3 — March 2015

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