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Title
Numerical modeling of polarization effects in a plasma at the W7-X stellarator

ISSN printed: 1733-8670, ISSN on-line: 2392-0378
Kravtsov, Yu.A.1; Bieg, Bohdan2; Hirsch, Matthias3
URI: https://repository.am.szczecin.pl/handle/123456789/315
2011-06-10 2012
The interferometer-polarimeter in the stellarator W7-X will operate in the far infrared band in the double passage regime: the electromagnetic beam will be reflected back from a corner cube retroreflector and thus pass through the magnetized plasma twice. Evolution of the polarization state of the beam along the polarimeter sightline in the standard magnetic field configuration of W7-X is analyzed on the basis of differential equations, for traditional polarization parameters – azimuthal angle  and ellipticity angle . The influence of the Faraday and the Cotton-Mouton phenomena on polarization parameters  and  are analyzed. Calculations are performed for different plasma densities. Finally the potential sources of inaccuracy are considered, such as the shift in the probing beam position
  1. FUCHS CH., HARTFUSS H.J.: Line integrated density meas-urements based on Cotton–Mouton polarimetry. Rev. Sci. Instrum., 1999, 70, 722–725.,
  2. GUENTHER K.: Approximate method to extract the pure Faraday and Cotton–Mouton effects from polarimetry measurements in a tokamak. Plasma Phys. Control. Fusion, 2004, 46, 1423–1441.,
  3. SEGRE S. E., ZANZA V.: Derivation of the pure Faraday and Cotton–Mouton effects when polarimetric effects in a to-kamak are large. Plasma Phys. Control. Fusion, 2006, 48, 339–351. Others:,
  4. CZYZ Z.H., BIEG B., KRAVTSOV YU.A.: Complex polariza-tion angle: Relation to traditional polarization parameters and application to microwave plasma polarimetry. Phys. Let. A, 2007, 368, 101–107.,
  5. SEGRE S.E.: A review of plasma polarimetry – theory and methods. Plasma Phys. Control. Fusion, 1999, 41, R57–R100.,

Title

Numerical modeling of polarization effects in a plasma at the W7-X stellarator

Pages

5–9

Figures

6

Tables

0

ISSN printed

1733-8670

ISSN on-line

2392-0378

DOI

Type

Original scientific article

Journal

26 Scientific Journals of the Maritime University of Szczecin, no. 26 / 2011

Publisher

Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie

Copyright Holder

Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie

Published

2011-06-10

Recieved

2011-04-14

Accepted

2011-05-10

Funding

No data

Keywords

Faraday, Cotton-Mouton, plasma density

URI:

https://repository.am.szczecin.pl/handle/123456789/315

Language

English

Authors

Kravtsov, Yu.A.1; Bieg, Bohdan2; Hirsch, Matthias3

Affiliation

1 Maritime University of Szczecin, Faculty of Maritime Engineering, Department of Physics Akademia Morska w Szczecinie, Wydział Mechaniczny, Katedra Fizyki 70-500 Szczecin, ul. Wały Chrobrego 1–2 Space Research Institute, Moscow 117997, Profsoyuznaya St. 82/34, Russia,
2 Maritime University of Szczecin, Faculty of Maritime Engineering, Department of Physics Akademia Morska w Szczecinie, Wydział Mechaniczny, Katedra Fizyki 70-500 Szczecin, ul. Wały Chrobrego 1–2, b.bieg@am.szczecin.pl
3 Max Planck Institute for Plasma Physics, D-17491 Greifswald, Wendelsteinstrasse, Germany,

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