Physics of Plasmas
Feedback | Help | Exit
Physics of Plasmas
   
 
 
 
Previous Article
A relativistic planar diode
Potential and velocity distributions in a relativistic, planar diode are presented in the form of graphs for a range of initial injection velocities. The important stability conditions for distributio...
Next Article
Evaluation of models for numerical simulation of the non-neutral region of sheath plasma
Four different electron models are used to simulate the nonequilibrium plasma flow around a representative cylindrical Faraday probe geometry. Each model is implemented in a two-dimensional axisymmetr...

Energy flow through a nonambipolar Langmuir sheath

Phys. Plasmas 16, 073501 (2009); doi:10.1063/1.3166597

Published 8 July 2009

You are not logged in to this journal. Log in

L. A. Dorf1 and V. E. Semenov2
1Applied Materials, Santa Clara, California 95054, USA
2Institute of Applied Physics RAS, Nizhny Novgorod 603950, Russia
When electrons travel through the sheath toward a plasma-facing surface, they lose a part of their kinetic energy due to the negative work of the electric field in the sheath. What happens to this energy? Does it need to be accounted for if one needs to calculate an energy flux to a wall? In this note, the above questions are answered for three different cases of the boundary conditions: (a) electrically isolated surface charged to a steady-state value corresponding to a floating potential; (b) an isolated wall not yet charged to the floating potential; and (c) biased electrode conducting a steady-state current. The answers are found to be different in each case, but the general conclusion is that to evaluate surface power deposition due to particle bombardment, electron and ion energy fluxes need to be calculated at the wall, and not in the quasineutral plasma. ©2009 American Institute of Physics
History: Received 31 December 2008; accepted 10 June 2009; published 8 July 2009
Permalink: http://link.aip.org/link/?PHPAEN/16/073501/1
BUY THIS ARTICLE   (US$28)
Download PDF (188 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 52.40.Hf
    Plasma-material interactions; boundary layer effects
  • 52.40.Kh
    Plasma sheaths
  • 52.25.Dg
    Plasma kinetic equations
  • YEAR: 2009

RELATED DATABASES


To view database links for this article,
you need to log in.
To view database links for this article,
you need to log in.

PUBLICATION DATA

ISSN:
1070-664X (print)   1089-7674 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (19)
View in Separate Window/Tab
For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. I. Langmuir and H. M. Mott-Smith, Gen. Electr. Rev. 27, 449 (1924)
  2. see also The Collected Works of Irving Langmuir, edited by C. G. Suits and H. E. Way (Pergamon, New York, 1961), Vol. 4.
  3. K. -U. Riemann, J. Phys. D: Appl. Phys. 24, 493 (1991).
  4. B. N. Kliarfeld and N. A. Neretina, Sov. Phys. Tech. Phys. 3, 271 (1958).
  5. V. L. Granovsky, Electric Current in Gas. Steady Current (Nauka, Moscow, 1971), § 58 (in Russian).
  6. L. Dorf, V. Semenov, and Y. Raitses, Appl. Phys. Lett. 83, 2551 (2003).
  7. L. Dorf, Y. Raitses, and N. J. Fish, J. Appl. Phys. 97, 103309 (2005).
  8. G. D. Hobbs and J. A. Wesson, Plasma Phys. 9, 85 (1967).
  9. P. C. Stangeby, The Plasma Boundary of Magnetic Fusion Devices (Taylor and Francis, London, 2000).
  10. B. Longmier, S. Baalrud, and N. Hershkowitz, Rev. Sci. Instrum. 77, 113504 (2006).
  11. S. D. Baalrud, B. Longmier, and N. Hershkowitz, Phys. Plasmas 14, 042109 (2007).
  12. V. Godyak, Y. Raitses, and N. J. Fisch, Papers Proceedings of the 30th International Electric Propulsion Conference, Florence, 2007 (Electric Rocket Propulsion Society, Cleveland, OH, 2003), IEPC Paper No. 2007–266.
  13. K. K. Diamant, Papers Proceedings of the 41st Joint Propulsion Conference and Exhibit, Tucson, 2005 (American Institute of Aeronautics and Astronautics, Reston, VA, 2003), AIAA Paper No. 2005–3662.
  14. J. E. Allen, R. L. F. Boyd, and P. Reynolds, Proc. Phys. Soc. London, Sect. B 70, 297 (1957).
  15. P. K. Shukla, Phys. Plasmas 8, 1791 (2001).
  16. H. Yamaguchi and Y. -N. Nejoh, Phys. Plasmas 6, 1048 (1999).
  17. J. E. Allen, Phys. Scr. 45, 497 (1992).
  18. A. Karamcheti and Ch. Steinbruchel, J. Vac. Sci. Technol. A 17, 3051 (1999).
  19. See National Technical Information Service Document No. AD-634 596 (J. G. Laframboise, Report No. 100, University of Toronto UTIAS, 1996). Copies may be ordered from the National Technical Information Service, Springfield, VA 22161.
  20. J. E. Allen, B. M. Annaratone, and U. de Angelis, J. Plasma Phys. 63, 299 (2000).

CITING ARTICLES
For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.


Copyright © American Institute of Physics