New Applications of Langmuir Probes
- Autores: Masherov P.E.1, Piskunkov A.F.1, Riaby V.A.1, Savinov V.P.2, Yakunin V.G.2
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Afiliações:
- Research Institute of Applied Mechanics and Electrodynamics of the Moscow Aviation Institute (National Research University)
- Faculty of Physics
- Edição: Volume 80, Nº 11 (2017)
- Páginas: 1697-1700
- Seção: Gas Discharge and Plasma Physics
- URL: https://journal-vniispk.ru/1063-7788/article/view/193471
- DOI: https://doi.org/10.1134/S1063778817110114
- ID: 193471
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Resumo
In this work, two new possibilities for standard probe diagnostics are described. The first one can be used to study isotropic, collisionless low-pressure plasma in which the electron energy distribution function is close to a Maxwellian one. In such plasmas, the Boltzmann law, Bohm effect, and 3/2 power law are valid. Use of corresponding system of equations for cylindrical Langmuir probes allowed for measurements of probe sheath thicknesses and the mean ion mass. The solution of this task was provided by accurate probe diagnostics of inductive xenon plasma at pressure p = 2 mTorr that resulted in the determination of the Bohm coefficient CBCyl = 1.22. The second possibility of probe diagnostics includes a method and device for evaluation of ion current density to a wall under a floating potential using a radially movable plane wall Langmuir probe simulator. This measurement in the same xenon plasma served as the basis for development of an ion source in which the given wall was represented by an ion extracting electrode of the ion extraction grid system.
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Sobre autores
P. Masherov
Research Institute of Applied Mechanics and Electrodynamics of the Moscow Aviation Institute (National Research University)
Email: riaby2001@yahoo.com
Rússia, Moscow, 125080
A. Piskunkov
Research Institute of Applied Mechanics and Electrodynamics of the Moscow Aviation Institute (National Research University)
Email: riaby2001@yahoo.com
Rússia, Moscow, 125080
V. Riaby
Research Institute of Applied Mechanics and Electrodynamics of the Moscow Aviation Institute (National Research University)
Autor responsável pela correspondência
Email: riaby2001@yahoo.com
Rússia, Moscow, 125080
V. Savinov
Faculty of Physics
Email: riaby2001@yahoo.com
Rússia, Moscow, 119991
V. Yakunin
Faculty of Physics
Email: riaby2001@yahoo.com
Rússia, Moscow, 119991
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