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@proceedings{2249383,
author = {Mrkvičková, Martina and Kuthanová, Lucia and Bílek, Petr and Obrusník, Adam and Navrátil, Zdeněk and Dvořák, Pavel and Adamovich, Igor and Šimek, Milan and Hoder, Tomáš},
booktitle = {9th Plasma Science and Entrepreneurship Workshop},
keywords = {plasma; electric field; EFISH; Townsend discharge},
language = {eng},
title = {Measurements of the electric field: four methods match},
url = {https://visiondynamics.nl/workshops/9th-plasma-workshop},
year = {2022}
}
TY - CONF
ID - 2249383
AU - Mrkvičková, Martina - Kuthanová, Lucia - Bílek, Petr - Obrusník, Adam - Navrátil, Zdeněk - Dvořák, Pavel - Adamovich, Igor - Šimek, Milan - Hoder, Tomáš
PY - 2022
TI - Measurements of the electric field: four methods match
KW - plasma
KW - electric field
KW - EFISH
KW - Townsend discharge
UR - https://visiondynamics.nl/workshops/9th-plasma-workshop
N2 - The electric field is one of the essential plasma parameters which determines the discharge dynamics and initiates chemistry in the plasma. Different experimental methods have been developed and applied for electric field determination. Yet, with such a variety of discharge types, gases and other conditions, it is usually only one method matching the requirements of the studied discharge system. The aim of our work was to investigate several experimental methods for the determination of the electric field development and compare their results obtained under the same discharge conditions. The object suitable for all methods was a weak microseconds-lasting atmospheric pressure Townsend discharge (APTD) operated in the dielectric barrier configuration in pure nitrogen. We chose four methods: laser-aided EFISH (electric field induced second harmonics generation), optical emission-based FNS/SPS (first negative/second positive systems of molecular, nitrogen) intensity ratio, equivalent electrical circuit approach, the determination from the first Townsend coefficient ( E/N ) acquired from the spatial rise of the optical emission intensity. The resulting electric field values are in a reasonable range, yet show mutual discrepancies. Limitations, advantages and sources of systematical errors of all methods are discussed in detail for investigated discharge. Special attention is paid to the EFISH method, whose measurements are supported by the re-computation of the effective interaction path of the laser using an electrostatic model.
ER -
MRKVIČKOVÁ, Martina, Lucia KUTHANOVÁ, Petr BÍLEK, Adam OBRUSNÍK, Zdeněk NAVRÁTIL, Pavel DVOŘÁK, Igor ADAMOVICH, Milan ŠIMEK and Tomáš HODER. Measurements of the electric field: four methods match. In \textit{9th Plasma Science and Entrepreneurship Workshop}. 2022.
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