Electric field in APTD in nitrogen determined by EFISH, FNS/SPS ratio, alpha-fitting and electrical equivalent circuit model

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00131210" target="_blank" >RIV/00216224:14310/23:00131210 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1361-6595/acd6de" target="_blank" >https://doi.org/10.1088/1361-6595/acd6de</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/acd6de" target="_blank" >10.1088/1361-6595/acd6de</a>

Result language

angličtina

Original language name

Electric field in APTD in nitrogen determined by EFISH, FNS/SPS ratio, alpha-fitting and electrical equivalent circuit model

Original language description

We investigate the electric field development in weak microseconds-lasting atmospheric pressure Townsend discharge operated in a barrier discharge arrangement in pure nitrogen. The electric field is determined using four different methods: laser-aided electric field induced second harmonics (EFISH), optical emission-based first negative/second positive systems (FNS/SPSs of molecular nitrogen) intensity ratio, electrical equivalent circuit approach and via determination of the Townsend first coefficient alpha(E/N) from the spatial optical emission profile. The resulting values of the electric field obtained by these respective methods, regardless of the differences in absolute values, lie within a reasonable range. The limitations and advantages of all methods are discussed in detail for the investigated discharge. The EFISH measurements are supported by re-computation of the effective interaction-path of the laser using an electrostatic model. The FNS/SPS method provides systematically higher values compared to other methods. We discuss in detail the potential origin of this discrepancy, as this method is at the limit of its applicability due to the low E/N values and we also consider the impossibility of full verification of the underlying assumptions. The focused discussion addresses best-practice issues and identifies possible future steps to improve each of the four methods under given conditions.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plasma Sources Science and Technology

ISSN

0963-0252

e-ISSN

1361-6595

Volume of the periodical

32

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

21

Pages from-to

1-21

UT code for WoS article

001011114400001

EID of the result in the Scopus database

2-s2.0-85162957122