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Articles
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with Citations
to Z. Abou-Assaleh |
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2008 |
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http://www.iop.org/EJ/abstract/0963-0252/17/1/015012 |
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Ion acoustic wave studies near the
presheath/sheath boundary in a weakly collisional argon/xenon plasma
Lutfi Oksuz et al
2008 Plasma Sources Sci. Technol. 17
015012 (5pp) doi:10.1088/0963-0252/17/1/015012 |
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Lutfi Oksuz 1,
Dongsoo Lee
and
Noah
Hershkowitz
Department of Engineering Physics, University of Wisconsin at
Madison, Madison, WI 53706, USA
1
Present address: Department of Physics, Suleyman Demirel
University, Isparta 32260, Turkey.
E-mail:
oksuz@fef.sdu.edu.tr
Abstract. Ion acoustic
wave (IAW) phase velocities are measured near the sheath/presheath
boundary in a weakly collisional argon/xenon plasma. Wave
profiles versus position are measured using a boxcar averager
with a gate width of 30 ns and CW excitation at 50 or 75 kHz.
Variable gate delays allow measurement of details of the wave
close to the boundary. It is shown that the phase velocity at
the presheath/sheath boundary is approximately twice the phase
velocity in the bulk plasma for both argon and argon/xenon
plasmas, in agreement with a recent calculation (Lee D et
al 2007 Phys. Rev. Lett. 99 155004). This result
indicates each ion's drift velocity at the boundary is equal
to the IAW phase velocity in the bulk plasma.
Print publication: Issue 1
(February 2008)
Received 28 August 2007, in final form
11 October 2007
Published 19 December 2007
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Z. Abou-Assaleh |
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Theoretical Plasma
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Controlled Thermonuclear Fusion Energy |
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