Title
Primena globalnih modela u analizi fizičkih i hemijskih procesa u niskotemperaturnim plazmama na atmosferskom pritisku
Creator
Mladenović, Željko, 1989-
CONOR:
68916489
Copyright date
2021
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
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Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 28.04.2021.
Other responsibilities
Academic Expertise
Prirodno-matematičke nauke
Academic Title
-
University
Univerzitet u Nišu
Faculty
Prirodno-matematički fakultet
Group
Odsek za fiziku
Alternative title
Global models application in analysis of physical and chemical processes in atmospheric pressure low temperature plasmas
Publisher
[Ž. J. Mladenović]
Format
243 lista
description
Bibliografija: listovi 222-243.
description
Physics of ionized gases and plasmas
Abstract (en)
The main goal of research in this dissertation is the studying of physical and
chemical processes in atmospheric pressure low temperature plasmas,
formed in the mixture of He or He/O2 with humid air, based on application
of 0D global models. Electron energy distribution function in the two term
approximation and rate coefficients for electron impact processes, necessary
for solving the balance equations of global model, have been calculated by
numerical solving of Boltzmann kinetic equation with program BOLSIG+,
with cross section data taken from databases LXCat and Quantemol-DB.
Using the model of electron swarm, the influence of cross section dataset on
distribution function and transport coefficients has been studied. In the case
of He/O2 RF micro-plasma jet with some percent of humid air, the influence
of electron concentration on electron energy distribution function and
plasma composition has been studied by global model. In the case of pulsed
(ns) He plasma jet formed in mixture of plasma with humid air, the
influence of water vapor concentration on the main production and
destruction channels for OH radical has been analyzed and results have been
compared with the results of fluid model in literature. Global model was
expanded by including the calculation of electron concentration and
temperature, and the term for gas flow. The model has been verified in the
procedure of modeling the mass spectrum of ions, for He plasma jet which
propagates in humid air, measured in the Laboratory of gaseous electronics,
Institute of physics Belgrade. Chemical kinetics of active species, important
for application in biomedicine and agriculture, has been studied in detail.
The influence of water vapor on electron concentration, electron
temperature and chemical kinetics of all included species has been analyzed.
Authors Key words
Niskotemperaturna plazma, globalni model, funkcija raspodele
elektrona po energiji, koeficijent brzine, koncentracija i
temperatura elektrona, hemijska kinetika
Authors Key words
Low temperature plasma, global model, electron energy distribution
function, rate coefficient, electron concentration and temperature,
chemical kinetics
Classification
533.9...15:53.043/044:66-985(043.3)
Subject
P240
Type
Tekst
Abstract (en)
The main goal of research in this dissertation is the studying of physical and
chemical processes in atmospheric pressure low temperature plasmas,
formed in the mixture of He or He/O2 with humid air, based on application
of 0D global models. Electron energy distribution function in the two term
approximation and rate coefficients for electron impact processes, necessary
for solving the balance equations of global model, have been calculated by
numerical solving of Boltzmann kinetic equation with program BOLSIG+,
with cross section data taken from databases LXCat and Quantemol-DB.
Using the model of electron swarm, the influence of cross section dataset on
distribution function and transport coefficients has been studied. In the case
of He/O2 RF micro-plasma jet with some percent of humid air, the influence
of electron concentration on electron energy distribution function and
plasma composition has been studied by global model. In the case of pulsed
(ns) He plasma jet formed in mixture of plasma with humid air, the
influence of water vapor concentration on the main production and
destruction channels for OH radical has been analyzed and results have been
compared with the results of fluid model in literature. Global model was
expanded by including the calculation of electron concentration and
temperature, and the term for gas flow. The model has been verified in the
procedure of modeling the mass spectrum of ions, for He plasma jet which
propagates in humid air, measured in the Laboratory of gaseous electronics,
Institute of physics Belgrade. Chemical kinetics of active species, important
for application in biomedicine and agriculture, has been studied in detail.
The influence of water vapor on electron concentration, electron
temperature and chemical kinetics of all included species has been analyzed.
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