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Enhancement of electric force by ion-neutral collisions

Appl. Phys. Lett. 95, 181504 (2009); doi:10.1063/1.3257694

Published 5 November 2009

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G. Makrinich and A. Fruchtman
H.I.T.-Holon Institute of Technology, 52 Golomb St., Holon 58102, Israel
The measured force exerted on an ion flow by an electric field is found to be larger than the electric force that can be exerted if the ions are collisionless. In addition, the increase of the gas pressure is found to result in an increase of the electric force despite a simultaneous decrease of the deposited electric power. Employing a simple model, we argue that these experimental findings result from the electric force being felt by the ions for a longer time, their residence time in the acceleration region is increased due to their slowing-down collisions with neutrals. ©2009 American Institute of Physics
History: Received 14 July 2009; accepted 12 October 2009; published 5 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/181504/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.20.Hv
    Atomic, molecular, ion, and heavy-particle collisions in plasma
  • 52.30.-q
    Plasma dynamics and flow
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
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REFERENCES (10)
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  1. G. Makrinich and A. Fruchtman, Phys. Plasmas 16, 043507 (2009).
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    8. A. Fruchtman, G. Makrinich, and J. Ashkenazy, Plasma Sources Sci. Technol. 14, 152 (2005).
  8. M. A. Lieberman and A. J. Lichtenberg, Principles of Plasma Discharges and Materials Processing (Wiley, New York, 1994).
  9. A. Fruchtman, Phys. Rev. Lett. 96, 065002 (2006).
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