Computational Technique For Plasma Parameters Determination Using Langmuir Probe Data

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The Title Goes Here - Institute for Plasma Research

10th Asia Plasma & Fusion Association Conference APFA 2015 10th Asia Plasma & Fusion Association Conference Monday, 14 December 2015 Friday, 18 December 2015 Hosted by

Overview Experimental Diagnostics for Rarefied Flows

aturized probe which is used for local measurements at very high heat fluxes of more than 10 MW/m2, e.g. also in electrical thrusters [3]. When using Pitot probes, one must generally differentiate between two cases: measurement in a subsonic or a supersonic flow. In the first case, the conditions are relatively simple. The Bernoulli equation is

Charles University in Prague Department of Surface and Plasma

Department of Surface and Plasma Science Doctoral thesis Low Temperature Plasma at Intermediate Pressures and in the Magnetic Field Experiment and Model Mgr.Aleˇs Marek supervisor: Prof. RNDr. Milan Tichy´, DrSc.

First mesospheric in-situ measurement in Iran using sounding

probe for measuring ionospheric parameters is investigated by varying background parameters. A complicated computational model is discussed and used for accurate determination of plasma parameters. A data reduction technique to analyze the measured parameters is presented. The planned laboratory experiments are also discussed. 2.

RELEVANCE OF SPHERICAL LANGMUIR PROBE IN NON-MAXWELLIAN SPACE

This work is conducted using computational techniques to of a technique to model Non-Maxwellian plasma. The of thermal plasma in the ionosphere, Langmuir probe is a simple and straight

Verification of the Algorithm for Emission Tomography of

checked using the Langmuir probe. Verification of the Algorithm for Emission Tomography of Plasma Inhomogeneities in a PlasmaChemical Reactor Using the Langmuir Multiprobe A. V. Fadeev and K. V

Study of plasma-solid interaction in electronegative gas

The input data for our computer experiment were obtained from argon and oxygen plasma and from their mixtures. The main experimental parameters were the gas pressure, which varied between 67 and 800 Pa, the discharge current in limits 5 to 30 mA and the concentration of oxygen in the mix-ture in limits 0 to 100%. During the measurement

Platform: Molecular Dynamics I

x-ray sources. To promote and facilitate scientific discovery using this sensitive technique, we constructed an experimental setup for TXRF atop an existing liquid surface x-ray scattering spectrometer. We also developed a MATLAB-based software package with a graphical user interface (GUI), named XeRay, for quick, accurate, and intuitive data

Analysis of neutral particle recycling and pedestal fueling

Langmuir probe, Thomson scattering, and the Langmuir probe near the upper baffle. The locations of these diagnos-tics and their respective outputs are depicted in Fig. 1 a The window frame analysis determines a global ion flux to the outboard chamber. In Ref. 16, it was noted that low midplane probe currents suggested the ion flux was

Instructions for use

the electron number density and electronic excitation temperature of L2K plasma ows in DLR using a Langmuir probe, microwave interferometry, and microwave plasma transmission spectroscopy methods. Additionally, the mass-averaged enthalpy and local mass-speci c enthalpy of arc heaters

Electron Density and Electron Neutral Collision Frequency in

plasma parameters are obtained through a least mean square fit of the measured impedance data against the analytical impedance formula Z. B (f ) of Balmain (1969). These initial parameters are used as a starting point to drive a finite difference computational model of an antenna immersed in a plasma called PF-FDTD. The parameters are then

UNCLASSIFIED AD NUMBER LIMITATION CHANGES

2.0 LANGMUIR PROBE THEORY 3 3.0 EXPERIMENTAL TECHNIQUE 6 3.1 Langmuir Probes 6 3.2 Microwave Interferometer 13 4.0 DATA PROCESSING 22 4.1 Langmuir Probe Signals 22 4.2 Interferometer SIN(A$) Signals 27 5.0 RESULTS 28 5.1 Interferometer Results 28 5.2 Langmuir Probe Results :52 6.0 DISCUSSION 44 7.0 CONCLUSION 46

Instructions for use

peak electron density in the plasma layer (see also Fig. 1). To measure the number density of electrons, the three RAM C vehicles were equipped with an electrostatic (Langmuir) probe and a thermocouple probe at the aft. During the launch, the Scout vehicle with the RAM C-3 payload lifted ff vertically, 4

Prediction of Axial Variation of Plasma Potential in Helicon

Plasma parameters such as electron temperature, electron density and plasma potential play an essential role in the characterization of plasma. The Langmuir probe is generally used for the direct measurement of the parameters described above (Hopkins, 1995). Langmuir probes are considered the most suitable tool for the