Atmospheric pressure Townsend discharge in pure nitrogen A test case for N<inf>2</inf>( A 3 ς u + , v ) kinetics under low E/ N conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F22%3A00565854" target="_blank" >RIV/61389021:_____/22:00565854 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/ac7ad1" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/ac7ad1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/ac7ad1" target="_blank" >10.1088/1361-6595/ac7ad1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Atmospheric pressure Townsend discharge in pure nitrogen A test case for N<inf>2</inf>( A 3 ς u + , v ) kinetics under low E/ N conditions

Popis výsledku v původním jazyce

This work investigates the kinetics of the N2( A3ςu+,v ) state in the atmospheric-pressure Townsend discharge (APTD) operated in a barrier discharge setup in pure nitrogen. To understand the complex nature of the N2( A3ςu+,v ) state we have developed a detailed state-to-state vibrational kinetic model of N2 applicable mainly at low reduced electric fields ( < 200 Td). The kinetic model benefits from the determination of the electric field and the electron density profile using the equivalent electric circuit analysis. The knowledge of both parameters significantly reduces the number of free parameters of the model and thus improves the accuracy of kinetic predictions. The results of the kinetic model are compared with the measured emission spectra of the second positive system and the Herman infrared system of N2. The use of the sensitivity analysis method leads to a better understanding of the role of specific elementary processes in the APTD mechanism and also to the determination of the density of the two lowest vibrational levels of N2( A3ςu+ ), which varies between 1012 and 1014 cm-3 depending on the applied voltage. The determination is important, because the two lowest vibrational levels of N2( A3ςu+ ) are considered to play an important role in the secondary emission of electrons from dielectric surfaces. This work shows that the complex state-to-state kinetic modeling in combination with the phase-resolved emission spectroscopy is the key to a better understanding of the processes responsible for establishing and sustaining the APTD mechanism in nitrogen.

Název v anglickém jazyce

Atmospheric pressure Townsend discharge in pure nitrogen A test case for N<inf>2</inf>( A 3 ς u + , v ) kinetics under low E/ N conditions

Popis výsledku anglicky

This work investigates the kinetics of the N2( A3ςu+,v ) state in the atmospheric-pressure Townsend discharge (APTD) operated in a barrier discharge setup in pure nitrogen. To understand the complex nature of the N2( A3ςu+,v ) state we have developed a detailed state-to-state vibrational kinetic model of N2 applicable mainly at low reduced electric fields ( < 200 Td). The kinetic model benefits from the determination of the electric field and the electron density profile using the equivalent electric circuit analysis. The knowledge of both parameters significantly reduces the number of free parameters of the model and thus improves the accuracy of kinetic predictions. The results of the kinetic model are compared with the measured emission spectra of the second positive system and the Herman infrared system of N2. The use of the sensitivity analysis method leads to a better understanding of the role of specific elementary processes in the APTD mechanism and also to the determination of the density of the two lowest vibrational levels of N2( A3ςu+ ), which varies between 1012 and 1014 cm-3 depending on the applied voltage. The determination is important, because the two lowest vibrational levels of N2( A3ςu+ ) are considered to play an important role in the secondary emission of electrons from dielectric surfaces. This work shows that the complex state-to-state kinetic modeling in combination with the phase-resolved emission spectroscopy is the key to a better understanding of the processes responsible for establishing and sustaining the APTD mechanism in nitrogen.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA15-04023S" target="_blank" >GA15-04023S: Pokročilý výzkum kinetických procesů ve streamerových výbojích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Plasma Sources Science & Technology

ISSN

0963-0252

e-ISSN

1361-6595

Svazek periodika

31

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

22

Strana od-do

084004

Kód UT WoS článku

000841605600001

EID výsledku v databázi Scopus

2-s2.0-85136642482