TITLE

Pressure limitation of electron density measurement using a wave-cutoff method in weakly ionized plasmas

AUTHOR(S)
Hyun-Su Jun; Yun-Seong Lee; Byung-Keun Na; Hong-Young Chang
PUB. DATE
December 2008
SOURCE
Physics of Plasmas;Dec2008, Vol. 15 Issue 12, p124504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Pressure limitation of electron density measurement is presented using a wave-cutoff method. As gas pressure builds up, the electron motion at ω=ωp is disturbed by an electron-neutral collision and cannot catch up to the movement of the electromagnetic wave. For this reason, electromagnetic waves begin to penetrate into plasma and the wave-cutoff signal disappears as the gas pressure increases. This was also confirmed by using an impedance analysis of the probe system. The results corresponded well with the measured wave transmission characteristics at the plasma frequency.
ACCESSION #
35982542

 

Related Articles

  • Explicit Runge–Kutta integrator with Hamiltonian correction for long-time simulations of guiding-center orbit in tokamak configurations. Xiaotao Xiao; Shaojie Wang // Physics of Plasmas;Dec2008, Vol. 15 Issue 12, p122511 

    Hamiltonian correction method is proposed to improve the variable time-step fourth-order Runge–Kutta methods in computing guiding-center orbits in a tokamak. It is found that the new method can significantly improve the computation efficiency of the conventional Runge–Kutta method...

  • Electron density measurements in an atmospheric pressure argon discharge by means of plasma radiation. Bing Qi; Jianjun Huang; Liang Gao; Yunming Qiu // Physics of Plasmas;Aug2009, Vol. 16 Issue 8, p083301 

    A method is developed for measuring the electron density in argon during atmospheric pressure dielectric barrier discharge. The oscillating electromagnetic signal is detected by an antenna at a distance from the plasma source. The electron density is then calculated from the ion oscillation...

  • Dust acoustic waves in a magnetized anodic plasma. Trottenberg, Thomas; Block, Dietmar; Piel, Alexander // AIP Conference Proceedings;2005, Vol. 799 Issue 1, p510 

    Dust acoustic waves (DAW) in a particle cloud trapped in an anodic argon plasma are investigated. At certain parameters self-excited waves are observed. In stable or weakly unstable regimes DAWs can be excited externally. The experimental data is critically compared with fluid and kinetic...

  • Reduction of plasma electron density in a gas ionized by an electron beam: Use of a gaseous dielectric. Reid, Max B. // Journal of Applied Physics;5/1/1993, Vol. 73 Issue 9, p4212 

    Presents a study that investigated the reduction of plasma electron density in a gas ionized by an electron beam through the use of a gaseous dielectric. Reduction of plasma effects with an electron attachment gas; Experimental results and further application; Potential problems with an...

  • Diagnostics for low-energy electrons in a two-frequency capacitively coupled plasma in Ar. Ishimaru, M.; Ohba, T.; Ohmori, T.; Yagisawa, T.; Kitajima, T.; Makabe, T. // Applied Physics Letters;2/18/2008, Vol. 92 Issue 7, p071501 

    An experimental procedure to investigate the spatiotemporal characteristics of electrons in the vicinity of mean energy in a radiofrequency plasma is proposed by using optical emission and absorption spectroscopy in Ar. The method employs optical kinetics of long-lived metastable atom Ar(1s5)...

  • Arbitrary amplitude dust ion acoustic solitary waves in dense Fermi plasmas. Mahmood, S. // Physics of Plasmas;Jan2008, Vol. 15 Issue 1, p014502 

    The arbitrary amplitude dust ion acoustic solitary waves are investigated in unmagnetized quantum plasmas. The quantum hydrodynamic model is employed with the Sagdeev potential approach to describe the nonlinear dust ion acoustic waves in dense Fermi plasmas. It is found that electron density...

  • Interferometric studies of the electron density dynamics at the periphery of a micropinch discharge. Kuznetsov, A. P.; Bashutin, O. A.; Byalkovskii, O. A.; Vovchenko, E. D.; Korotkov, K. E.; Savjolov, A. S. // Plasma Physics Reports;Mar2008, Vol. 34 Issue 3, p193 

    Results are presented from experimental studies of the electron density dynamics at the periphery of a low-inductance vacuum spark. The measurements were performed using a newly developed homodyne quadrature interferometer possessing fairly high dynamic range and performance. The experiments...

  • Dust particle alignments and confinement in a radio frequency sheath. Samarian, A. A.; Vladimirov, S. V.; James, B. W. // Physics of Plasmas;Feb2005, Vol. 12 Issue 2, p022103 

    Stability of vertical and horizontal confinement of dust particles levitating in a rf sheath was studied experimentally. The experiments were carried out in an argon plasma discharge with micron-sized dust particles. Disruptions of particle arrangements were triggered by changing the discharge...

  • Dependence of electron peak current on hollow cathode dimensions and seed electron energy in a pseudospark discharge. Cetiner, S. O.; Stoltz, P.; Messmer, P.; Cambier, J.-L. // Journal of Applied Physics;Jan2008, Vol. 103 Issue 2, p023304 

    The prebreakdown and breakdown phases of a pseudospark discharge are investigated using the two-dimensional kinetic plasma simulation code OOPICâ„¢ PRO. Trends in the peak electron current at the anode are presented as function of the hollow cathode dimensions and mean seed injection...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics