Autor: Chrzanowski, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Application of the gradient method for polarimetric data inversion
Autorzy:: Chrzanowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/359769.pdf
Data publikacji:: 2012
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: Faraday effect
Cotton-Mouton effect
gradient method
Opis:: Gradient procedure is suggested, which allows to fit multi-parameter theoretical model to multi-channel experimental data obtained by means of polarimetric measurements. Procedure deals with nonlinear system of differential equations that describe the evolution of an electromagnetic wave in a hot plasma and provides sufficiently fast convergence to stationary values. The procedure is illustrated with numerical calculations in the case of one and two measurement channels, that allow to retrieve two and four of plasma parameters respectively.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 31 (103); 55-61
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: A new method of determining the parameters of thermonuclear plasma on the basis of multichannel polarimetric measurements
Autorzy:: Chrzanowski, J.
Kravtsov, Y.A.
Powiązania:: https://bibliotekanauki.pl/articles/148759.pdf
Data publikacji:: 2013
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: angular variables
gradient method
plasma diagnostics
plasma polarimetry
polarimetric data inversion
Opis:: A gradient method has been proposed as an effective procedure to reconstruct real parameters of tokamak plasma by means of multichannel polarimetric measurements. High efficiency of the suggested procedure is illustrated by numerical calculations performed for a given plasma model taking into account the poloidal component of magnetic field. Polarization state of electromagnetic wave traditionally is characterized by azimuthal – ψ and ellipticity – χ angles. Evolution of these parameters along the ray is described by the equations of angular variables technique (AVT) introduced in previous works of the present authors. Numerical simulations have approved that the gradient procedure provides acceptable accuracy of inversion already after several iterations.
Źródło:: Nukleonika; 2013, 58, 2; 281-285
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Unconventional procedure for inversion of polarimetric data: numerical calculation for a simple model of toroidal plasma
Autorzy:: Chrzanowski, J.
Kravtsov, , Y. A.
Mazon, D.
Powiązania:: https://bibliotekanauki.pl/articles/147712.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Cotton-Mouton effect
Faraday effect
gradient method
Opis:: A gradient method is proposed for inversion of polarimetric data for tokamak plasma. It is assumed that the electron density and the normalized magnetic profile along the ray are known from experiments (scattering and magnetic measurements) in the spirit of the EFIT approach. Under these assumptions the maximum value of the electron density and maximum value of the magnetic field may be estimated by the gradient method. It is shown that with this method it is possible to achieve accuracy of about 0.1% already after 3-4 iterations.
Źródło:: Nukleonika; 2012, 57, 1; 37-41
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

Artykuł

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