Main Physical Factors Limiting the Accuracy of Polarimetric Measurements in Tokamak Plasma

被引：4

作者：

Bieg, Bohdan ^{[1
]}

Chrzanowski, Janusz ^{[1
]}

Kravtsov, Yury A. ^{[1
]}

Orsitto, Francesco ^{[2
]}

机构：

[1] Maritime Univ Szczecin, Szczecin, Poland

[2] Assoc EURATOM ENEA, Frascati, Italy

来源：

3RD INTERNATIONAL CONFERENCE FRONTIERS IN DIAGNOSTIC TECHNOLOGIES, ICFDT3 2013 | 2015年 / 62卷

关键词：

Plasma; Polarimetry; DENSITY MEASUREMENTS; POLARIZATION; REFRACTION; INTERFEROMETRY;

D O I：

10.1016/j.phpro.2015.02.019

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The paper reviews and discusses the main factors, limiting the accuracy of polarimetric measurements in tokamak plasma. Theoretical methods, describing evolution of polarimetry state in tokamak plasma, are demonstrated not to contribute noticeably to inaccuracy at sufficiently short beam wavelengths. Based on the literature data as well as on our preliminary estimates it is possible to conclude that the following factors dominate: i) calibration procedure; ii) refraction in the inhomogeneous plasma; iii) influence of weak relativistic effects on plasma dielectric permittivity. The contribution of these factors to is within the range of several per cent. Other causes of measurement inaccuracies (absorption in plasma, diffraction of sounding beam, ray torsion, nonstationary processes in plasma) seem to be less significant. (C) 2014 The Authors. Published by Elsevier B.V.

引用

页码：107 / 112

页数：6

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