Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure
The kinetics of the N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) excited states in the barrier-discharge plasma in atmospheric air is calculated and their effect on the concentrations of derivative products – ozone and hydroxyls OH, НO₂ and H₂O₂ is analyzed. It is shown that the largest deviations in...
Saved in:
| Published in: | Вопросы атомной науки и техники |
|---|---|
| Date: | 2015 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2015
|
| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/82099 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure / A.G. Kalyuzhnaya, V.V. Tsiolko // Вопросы атомной науки и техники. — 2015. — № 1. — С. 100-103. — Бібліогр.: 3 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860241682478399488 |
|---|---|
| author | Kalyuzhnaya, A.G. Tsiolko, V.V. |
| author_facet | Kalyuzhnaya, A.G. Tsiolko, V.V. |
| citation_txt | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure / A.G. Kalyuzhnaya, V.V. Tsiolko // Вопросы атомной науки и техники. — 2015. — № 1. — С. 100-103. — Бібліогр.: 3 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The kinetics of the N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) excited states in the barrier-discharge plasma in atmospheric air is calculated and their effect on the concentrations of derivative products – ozone and hydroxyls OH, НO₂ and H₂O₂ is analyzed. It is shown that the largest deviations in the concentrations obtained with and without taking into account the excited states are observed for H₂O₂ (≈60%) and О₃ (≈ 40%) at a relative humidity of 20%. The variation of the air humidity from 20…80% does not result in qualitative changes in the behavior of the ozone and hydroxyl concentrations in the barrier discharge.
Рассчитана кинетика возбужденных уровней N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) И O₂(b¹Σg⁺) в барьерном разряде в воздухе и проанализировано их влияние на концентрации озона и гидроксилов OH, НO₂ и H₂O₂. Показано, что максимальное расхождение в концентрациях, полученных с учетом возбужденных состояний и без них, составляет около 60% для H₂O₂ и 40% для О₃ при влажности 20%. Варьирование влажности воздуха от 20…80% не приводит к качественному изменению поведения концентраций озона и гидроксилов в разряде.
Проведено розрахунки кінетики збуджених станів N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) та O₂(b¹Σg⁺) у бар’єрному розряді в повітрі та проаналізовано їх вплив на концентрації озону та гідроксилів OH, НO₂ та H₂O₂. Показано, що максимальне розходження в концентраціях, отриманих із врахуванням збуджених станів та без них, становить близько 60% для H₂O₂ та 40% для О₃ при вологості 20%. Варіювання вологості в межах від 20…80% не призводить до якісної зміни поведінки концентрацій озону та гідроксилів у розряді.
|
| first_indexed | 2025-12-07T18:30:33Z |
| format | Article |
| fulltext |
INFLUENCE OF EXCITED MOLECULES N2(A3Σu
+), N2(B3Πg), O2(1Δg)
AND O2(b1Σg
+) ON OZONE AND HYDROXYLS (H2O2, OH, HO2)
KINETICS IN THE PLASMA OF BARRIER DISCHARGE IN AIR AT
ATMOSPHERIC PRESSURE
A.G. Kalyuzhnaya, V.V. Tsiolko
Institute of Physics NAS of Ukraine, Kyiv, Ukraine
E-mail: akaluzh@ukr.net
The kinetics of the N2(A3Σu
+), N2(B3Πg), O2(1Δg), and O2(b1Σg
+) excited states in the barrier-discharge plasma in
atmospheric air is calculated and their effect on the concentrations of derivative products – ozone and hydroxyls
OH, НO2, and H2O2 is analyzed. It is shown that the largest deviations in the concentrations obtained with and
without taking into account the excited states are observed for H2O2 (≈60%) and О3 (≈ 40%) at a relative humidity
of 20%. The variation of the air humidity from 20…80% does not result in qualitative changes in the behavior of the
ozone and hydroxyl concentrations in the barrier discharge.
PACS: 52.80. Tn
INTRODUCTION
An interest in the study of a barrier discharge in
atmospheric pressure air is stipulated by a wide range of
its practical application, such as purification of exhaust
gases, sterilization of medical instruments, surface
modification, etc. Simulation of plasma kinetics in
barrier discharges opens the way to understanding the
nature of kinetic processes in its active media and the
relationship between their input parameters and the
concentrations of secondary products – hydroxyls,
ozone, acids. Therefore, of great importance is the
creation of an adequate model of plasmachemical
reactions in a barrier discharge.
Typically, such models take into account the kinetics
of the initial discharge components – nitrogen and
oxygen – in the ground states. However, the analysis of
the cross sections of their inelastic collisions with
electrons testifies to the active formation of N2(A3Σu
+),
N2(B3Πg), and O2(1Δg), O2(b1Σg
+) excited molecules in
the discharge. In this paper, the kinetics of these excited
states in the barrier discharge plasma in atmospheric
pressure is calculated. The effect of kinetic processes
involving the N2(A3Σu
+), N2(B3Πg), O2(1Δg), and
O2(b1Σg
+) excited molecules on the concentrations of
derivative products – ozone as well as OH, НO2, and
H2O2 hydroxyls is also investigated.
1. CALCULATION MODEL
The calculations presented in the paper are obtained
using the numerical model of plasma kinetics in a
homogeneous volume discharge, where the input
parameter is the introduced power density. This power
is converted to gas heating and inelastic collisions of
electrons and particles in the active medium, i.e.
(1) ,ej j
j j
W W W= +∑ ∑
where Wej and Wj are the specific powers spent for
inelastic and elastic collisions, respectively [1]. Given
that the energy introduced into the discharge is
uniformly distributed over the discharge chamber, the
rate of an electron-molecular reaction with the threshold
energy εei can be presented as
1 .ei
ei
ei ej j
j j
WWS
V W Wε
=
+∑ ∑
(2)
Derivative components in the discharge are formed
due to both electron processes and plasmachemical
reactions. Thus, one obtains the following kinetic
equation for the concentration Ni of particles of kind i
...
,
+++= ∑ ∑
j lj
ljijljijei
i NNkNkS
dt
dN , (3)
where Sei is calculated by Eq.(2), kij, kijl stand for the
rate constants of two- and three-particle molecular
reactions leading to the formation or destruction of the
component under study.
The component composition in the discharge was
calculated at the following input parameters: electric
field in the plasma of 20 kV/cm, embedded power of
1.5 W/cm3, and two humidity values – 20 and 80%. The
time dependences of the excited N2(A), N2(B), O2(Δ),
O2(Σ)states were analyzed together with their effect on
the densities of O3, H2O2, OH, and HO2 molecules.
The system of kinetic equations (3) was solved with
regard for the elementary processes described in [1]. To
analyze the effect of the excited nitrogen and oxygen
states on the discharge kinetics, the reactions listed in
Tables 1 and 2 were added to the kinetic model.
Table 1. Reactions involving N2(A) and N2(В) states
№ Reaction Rate constant
1 N2(A)+O2 > N2+O+O 2.54e-12 2
2 N2(A)+O2 > N2O+O 7.8e-14 2
3 N2(A)+N2O > N2+N+NO 1.0e-11 2
4 N2(A)+N2 > N2+N2 3.0e-18 2
5 N2(A)+NO > N2+NO 7.0e-11 2
6 N2(A)+O2 > N2+O2(Δ) 6.45e-13 2
7 N2(A)+O2 > N2+O2(Σ) 6.45e-13 2
8 N2(A)+O3 > N2+O2+O 4.2e-11 3
9 N2(A)+H2O > N2+H+OH 6.0e-14 3
10 N2(A)+NO2 > N2+NO+O 1.3e-11 3
11 N2(A)+N2(A) > N2+N2(B) 4.0e-10 3
12 N2(B)+N2 > N2(A)+N2 5.0e-11 2
13 N2(B) > N2(A) 1.1.5e5 2
14 N2(B)+NO > N2(A)+NO 2.4e-10 2
15 N2(B)+O2 > N2+O+O 3.0е-10 2
ISSN 1562-6016. ВАНТ. 2015. №1(95)
100 PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2015, № 1. Series: Plasma Physics (21), p. 100-103.
Table 2. Reactions involving О2(Δ) and O2(Σ) states
.
№ Reaction Rate constant
1 O2(Δ)+O3 > O2+O2+O 9.7e-13*exp-1564/T 2
2 O2(Δ)+N > NO+O 2.0e-14*exp-600/T 2
3 O2(Δ)+N2 > O2+N2 3.0e-21 2
4 O2(Δ)+O2 > O2+O2 2.2e-18(T/300)0.8 2
5 O2(Δ)+O > O2+O 7.0e-16 2
6 O2(Δ)+NO > O2+NO 2.5e-11 2
7 O2(Δ)+H2O > O2+H2O 5.0e-18 3
8 O2(Σ)+O3 > O2+O2+O 1.8e-11 2
9 O2(Σ)+N2 > O2(Δ)+N2 4.9e-15*exp-253/T 2
10 O2(Σ)+O2 > O2(Δ)+O2 4.3e-22*T2.4*exp-241/T 2
11 O2(Σ)+O > O2(Δ)+O 8.0e-14 2
12 O2(Σ)+NO>O2(Δ)+NO 4.0e-14 2
In our calculations, we compared the concentrations
of derivative molecules and radicals calculated without
reactions involving N2(A), N2(B), O2(Δ), O2(Σ), taking
into account only those with excited N2(A), N2(B) and
with excited O2(Δ), O2(Σ), and with regard for all
processes listed in Tables 1,2.
2. CALCULATION RESULTS
The time dependences of the N2(A), N2(B) densities
obtained for RH = 20 and 80% are presented in Fig. 1.
10-1110-1010-9 10-8 10-7 10-6 10-1 100 101
106
107
108
109
1010
1011
1012
t, s
RH = 20% N2(A)
N2(B)
Fig. 1. Time dependences of the N2(A), N2(B) densities
at air humidity of 20%
One can see that the concentrations of the both
molecules are low, yet significantly differing in favor of
the former component: the N2(A) density in the
discharge reaches 2e10 cm3, whereas the N2(B)
concentration does not exceed 1e8 cm3. Moreover, the
both concentrations very quickly reach their stationary
values: the concentration of N2(A) stops changing at
t = 5e-7 s, while that of N2(B) − at t = 5e-9 s.
Such a behavior of the considered dependences is
obviously explained by kinetic processes. The N2(A),
N2(B) excited levels are generated by electronic
excitation from the ground state of nitrogen molecules.
As concerns their deactivation channels, the dominant
processes for N2(А) are those with participation of
oxygen (reaction 1.1) with a rate of 2.54e-12 cm3/s.
The deactivation reaction due to collisions with nitrogen
has a much lower rate of 3.0e-18 cm3/s, while the other
reactions with noticeable rates involve derivative
molecules such as N2O and NO2, whose concentrations
in the discharge are much smaller than those of the
initial components - nitrogen and oxygen.
N2(В) molecules are mainly deactivated in collisions
with nitrogen (reaction 1.12, k = 5,0e-11 cm3/s) and
oxygen (reaction 3.15, k = 3,0e-10 cm3/s). It is clear that
these values significantly exceed the rates of N2(А)
deactivation.
Thus, analyzing the kinetic processes in Table 1, one
can draw the following conclusions:
1. The main decay channels of N2(A), N2(B) excited
molecules are the reactions involving the major
components of the active medium – nitrogen and
oxygen in their ground states. Thus, the stationary
concentrations of the excited nitrogen states are
determined almost exclusively by N2 and О2 densities,
so that they quickly reach their stationary values.
2. The considerable excess of the deactivation rates
of N2(В) molecules in collisions with N2, О2 over the
rates of the corresponding processes involving N2(A)
results in a significant gap between the concentrations
of the excited nitrogen states in favor of the latter.
3. The humidity value has no significant effect on
the N2(A), N2(B) concentrations. In the case of N2(B)
molecules, there are no direct interaction channels with
water or hydrogen-bearing components, whereas in the
case of N2(А), there is a deactivation reaction in
collisions with H2O, though its rate is comparatively
low (6.0e-14 cm3/s).
The temporal dynamics of the O2(Δ), O2(Σ)
concentrations presented in Fig. 2 is more complicated.
10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 101
108
109
1010
1011
1012
1013
1014
1015
RH = 20%
O2(a)
O2(b)
t, s
Fig. 2. Time dependences of the O2(Δ), O2(Σ) densities
at air humidity of 20%
The concentrations of excited oxygen molecules
reach significantly higher values than those of excited
nitrogen – 8e13 cm3/s and 6e11 cm3/s, respectively, and
do not come to stationary values in the time range up to
5 s. As follows from Table 2, nitrogen and oxygen in
their ground states are involved in the deactivation of
excited O2(Δ), O2(Σ) molecules, still the rates of the
corresponding processes are very small and do not
exceed 1e-18 cm3/s. In this case, of major importance
are reactions with participation of derivative products,
particularly the main channels of O2(Δ) deactivation are
collisions with NO (reaction 2.6) and O3 (reaction 2.1).
The same situation is observed in the case of O2(Σ) with
the most powerful decay channel being collisions with
ozone (reaction 2.8).
ISSN 1562-6016. ВАНТ. 2015. №1(95) 101
Thus, analyzing the kinetic reactions involving
excited oxygen states O2(Δ), O2(Σ), one can state that:
1. The main deactivation channels of the excited
oxygen states are processes involving ozone and NO
(for O2(Δ) molecules).
2. The insignificant role of deactivation of excited
oxygen by the initial mixture components – nitrogen
and oxygen in the ground states – provides noticeable
values of the O2(Δ), O2(Σ) densities in the discharge.
3. The time dependences of excited oxygen have a
complicated form determined by the behavior of the O3
and NO concentrations. For example, the O2(Σ) density
grows in the time interval t<1e-4 s, where the ozone
concentration in the discharge is insignificant. After
that, it decreases due to the rise in the ozone density in
this period. At t = 0.5 s, the ozone concentration reaches
a maximum and starts falling slowly, which in turn
results in a slight increase in the O2(Σ) concentration.
4. The same way as in the case of N2(A), N2(B), the
humidity has no noticeable effect on the excited oxygen
concentration due to the absence of deactivation
reactions involving hydrogen-bearing components.
1E-4 1E-3 0,01 0,1 1
0
2
4
6
[O3], 1016 cm-3
RH = 20%
t, s
1E-4 1E-3 0,01 0,1 1
0
2
4
6
[O3], 1016 cm-3
RH = 80%
t, s
Fig. 3. Time dependences of the ozone concentration at
RH =20 and 80% calculated without excited states
(⎯⎯), with N2(A), N2(B) (− − −), O2(Δ), O2(Σ) (− · − ·)
and with all nitrogen and oxygen excited states (− ·· − ··)
The influence of excited nitrogen and oxygen on the
ozone density can be traced in Fig. 3. One can see that
adding processes involving excited nitrogen molecules
to the kinetic model leads to an increase in the ozone
concentration, in spite of the process of N2(A) de-
activation in collisions with ozone (reaction 1.8). The
observed growth of the O3 density may be due to the
additional channels of formation of atomic oxygen
(reaction 1.1, 1.15), which is the main factor in the
ozone generation in the discharge.
If adding processes involving excited oxygen O2(Δ)
and O2(Σ) to the kinetic model, one, on the contrary,
observes a decrease of the ozone concentration in the
discharge. The deactivation reactions involving excited
oxygen molecules do not result in the dissociation of O2
molecules and, consequently, do not contribute to the
efficient ozone formation. Besides, there are processes
of direct destruction of ozone due to collisions with
excited oxygen molecules (reactions 2.1 and 2.8).
In spite of some compensation of the opposite
effects made by excited nitrogen and oxygen, their
cumulative influence leads to an increase in the O3
density. The rise in the humidity to 80% does not
change the behavior of the studied dependences.
1E-5 1E-4 1E-3 0,01 0,1 1
0
1
2
3
4 RH = 20%
[HO2], 1012 cm-3
t, s
1E-5 1E-4 1E-3 0,01 0,1 1
0
2
4
6
8
10
RH = 80%
[HO2], 1012 cm-3
t, s
Fig. 4. Time dependences of the НO2 concentration at
RH = 20 and 80% calculated without excited states
(⎯⎯), with N2(A), N2(B) (− − −), O2(Δ), O2(Σ) (− · − ·)
and with all nitrogen and oxygen excited states (− ·· − ··)
The effect of the kinetic reactions involving excited
nitrogen and oxygen on the OH concentration is
negligible. Taking separately into account either excited
nitrogen or oxygen leads to some increase in the OH
density, but this tendency is very weak. It is worth
noting that the reactions listed in Tables 1, 2 include
deactivation processes of excited states in collisions
with water molecules (reactions 1.9 and 2.7). Such
reactions could result in the decreasing efficiency of OH
generation in the discharge, but their rates are too small.
The rise in the air humidity from 20…80% leads to a
growth of the absolute OH concentrations, but does not
affect the behavior of their time dependence.
Fig. 4 shows the time dependences of the НО2
concentrations calculated at humidities of 20 and 80%.
One can see that taking into account either reactions
involving excited nitrogen or oxygen leads to a decrease
of the НО2 concentration, moreover, this effect is more
pronounced in the former case. Among the main kinetic
reactions, whose competition is responsible for the form
of the НО2 time dependence, one can mark out:
102 ISSN 1562-6016. ВАНТ. 2015. №1(95)
1E-4 1E-3 0,01 0,1 1
0
2
4
6
8
t, s
[H2O2], 1012 cm-3
RH = 20%
1E-5 1E-4 1E-3 0,01 0,1 1
0
10
20
30
t, s
[H2O2], 1012 cm-3
RH = 80%
Fig. 5. Time dependences of the H2О2 concentration at
RH = 20 and 80% calculated without excited states
(⎯⎯), with N2(A), N2(B) (− − −), O2(Δ), O2(Σ) (− · − ·)
and with all nitrogen and oxygen excited states (− ·· − ··)
1. Variations in the ozone concentration, as the most
powerful process of НО2 formation at the late discharge
stages is reaction 2.16 (OH + O3 → HO2 + O2).
2. The influence on the concentrations of atomic
oxygen and nitric oxide NO that contribute to the
destruction of НО2 in the discharge.
The form of the dependences obtained for H2O2
molecules (Fig. 5) coincides with that of the curves
calculated for НО2, but the quantitative effect is more
pronounced as the main channel of H2O2 generation is
reaction 2.18: HO2 + HO2 + M → H2O2 + O2 + M. The
growth of the humidity in the case of both HO2 and
H2O2 leads to an increase in the absolute concentrations,
though has no effect on the form of the dependences.
CONCLUSIONS
Calculations of the plasma kinetics in a barrier
discharge in atmospheric pressure air allowed us to
study the effect of excited nitrogen and oxygen states on
the basic kinetic processes in the discharge. It is shown
that the largest difference in the densities of derivative
discharge components calculated with regard for excited
states and without them is about 60% for H2O2 and 40%
for О3 at 20% humidity. For the rest of the components
under study this difference does not exceed 20%. These
values are insignificant as compared to the error
introduced into calculations by uncertainties in reaction
rates and cross sections of electron-molecular processes.
This fact allows one to state that the neglect of reactions
involving excited nitrogen and oxygen does not lead to
a significant inaccuracy in calculations of the kinetics in
volume discharges in atmospheric pressure air.
ACKNOWLEDGEMENT
This work was supported in part by “DFFD-RFFD-
2013” grant No F53.7/058.
REFERENCES
1. І.A. Soloshenko, V.V. Tsiolko, S.S. Pogulay,
A.G. Kalyuzhnaya, et al. Effect of water adding on
kinetics of barrier discharge in air // Plasma Sources
Sci. Technol. 2009, v. 18, p. 045019.
2. I.A. Kossyi, A.Yu. Kostinsky, A.A. Matveyev, and
V.P. Silakov. Kinetic scheme of the non-equilibrum
discharge in nitrogen-oxygen mixture // Plasma Sources
Sci. Technol.1992, v. 1, № 3, p. 207.
3. J.T. Herron, D.S. Green. Chemical Kinetics Database
and Predictive Schemes for Nonthermal Humid Air
Plasma Chemistry. Part II. Neutral Species Reactions //
Plasma Chem. Plasma Process. 2001, v. 21, p. 459.
Article rewceived 01.12.2014
ВЛИЯНИЕ ВОЗБУЖДЕННЫХ МОЛЕКУЛ N2(A3Σu
+), N2(B3Πg), O2(1Δg) И O2(b1Σg
+) НА КИНЕТИКУ
ОЗОНА И ГИДРОКСИЛОВ (H2O2, OH, HO2) В ПЛАЗМЕ БАРЬЕРНОГО РАЗРЯДА
В АТМОСФЕРНОМ ВОЗДУХЕ
А.Г. Калюжная, В.В. Циолко
Рассчитана кинетика возбужденных уровней N2(A3Σu
+), N2(B3Πg), O2(1Δg) и O2(b1Σg
+) в барьерном разряде
в воздухе и проанализировано их влияние на концентрации озона и гидроксилов OH, НO2 и H2O2. Показано,
что максимальное расхождение в концентрациях, полученных с учетом возбужденных состояний и без них,
составляет около 60% для H2O2 и 40% для О3 при влажности 20%. Варьирование влажности воздуха от
20…80% не приводит к качественному изменению поведения концентраций озона и гидроксилов в разряде.
ВПЛИВ ЗБУДЖЕНИХ МОЛЕКУЛ N2(A3Σu
+), N2(B3Πg), O2(1Δg), O2(b1Σg
+)
НА КІНЕТИКУ ОЗОНУ ТА ГІДРОКСИЛІВ (H2O2, OH, HO2) У ПЛАЗМІ БАР’ЄРНОГО РОЗРЯДУ
В ПОВІТРІ АТМОСФЕРНОГО ТИСКУ
Г.Г. Калюжна, В.В. Ціолко
Проведено розрахунки кінетики збуджених станів N2(A3Σu
+), N2(B3Πg), O2(1Δg) та O2(b1Σg
+) у бар’єрному
розряді в повітрі та проаналізовано їх вплив на концентрації озону та гідроксилів OH, НO2 та H2O2.
Показано, що максимальне розходження в концентраціях, отриманих із врахуванням збуджених станів та
без них, становить близько 60% для H2O2 та 40% для О3 при вологості 20%. Варіювання вологості в межах
від 20…80% не призводить до якісної зміни поведінки концентрацій озону та гідроксилів у розряді.
ISSN 1562-6016. ВАНТ. 2015. №1(95) 103
REFERENCES
А.Г. Калюжная, В.В. Циолко
Г.Г. Калюжна, В.В. Ціолко
|
| id | nasplib_isofts_kiev_ua-123456789-82099 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T18:30:33Z |
| publishDate | 2015 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Kalyuzhnaya, A.G. Tsiolko, V.V. 2015-05-25T06:15:03Z 2015-05-25T06:15:03Z 2015 Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure / A.G. Kalyuzhnaya, V.V. Tsiolko // Вопросы атомной науки и техники. — 2015. — № 1. — С. 100-103. — Бібліогр.: 3 назв. — англ. 1562-6016 PACS: 52.80. Tn https://nasplib.isofts.kiev.ua/handle/123456789/82099 The kinetics of the N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) excited states in the barrier-discharge plasma in atmospheric air is calculated and their effect on the concentrations of derivative products – ozone and hydroxyls OH, НO₂ and H₂O₂ is analyzed. It is shown that the largest deviations in the concentrations obtained with and without taking into account the excited states are observed for H₂O₂ (≈60%) and О₃ (≈ 40%) at a relative humidity of 20%. The variation of the air humidity from 20…80% does not result in qualitative changes in the behavior of the ozone and hydroxyl concentrations in the barrier discharge. Рассчитана кинетика возбужденных уровней N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) И O₂(b¹Σg⁺) в барьерном разряде в воздухе и проанализировано их влияние на концентрации озона и гидроксилов OH, НO₂ и H₂O₂. Показано, что максимальное расхождение в концентрациях, полученных с учетом возбужденных состояний и без них, составляет около 60% для H₂O₂ и 40% для О₃ при влажности 20%. Варьирование влажности воздуха от 20…80% не приводит к качественному изменению поведения концентраций озона и гидроксилов в разряде. Проведено розрахунки кінетики збуджених станів N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) та O₂(b¹Σg⁺) у бар’єрному розряді в повітрі та проаналізовано їх вплив на концентрації озону та гідроксилів OH, НO₂ та H₂O₂. Показано, що максимальне розходження в концентраціях, отриманих із врахуванням збуджених станів та без них, становить близько 60% для H₂O₂ та 40% для О₃ при вологості 20%. Варіювання вологості в межах від 20…80% не призводить до якісної зміни поведінки концентрацій озону та гідроксилів у розряді. This work was supported in part by “DFFD-RFFD-2013” grant No F53.7/058. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Фундаментальная физика плазмы Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure Влияние возбужденных молекул N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) и O₂(b¹Σg⁺) на кинетику озона и гидроксилов (H₂O₂, OH, HO₂) в плазме барьерного разряда в атмосферном воздухе Вплив збуджених молекул N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) та O₂(b¹Σg⁺) на кінетику озону та гідроксилів (H₂O₂, OH, HO₂) у плазмі бар’єрного розряду в повітрі атмосферного тиску Article published earlier |
| spellingShingle | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure Kalyuzhnaya, A.G. Tsiolko, V.V. Фундаментальная физика плазмы |
| title | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure |
| title_alt | Влияние возбужденных молекул N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) и O₂(b¹Σg⁺) на кинетику озона и гидроксилов (H₂O₂, OH, HO₂) в плазме барьерного разряда в атмосферном воздухе Вплив збуджених молекул N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) та O₂(b¹Σg⁺) на кінетику озону та гідроксилів (H₂O₂, OH, HO₂) у плазмі бар’єрного розряду в повітрі атмосферного тиску |
| title_full | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure |
| title_fullStr | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure |
| title_full_unstemmed | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure |
| title_short | Influence of excited molecules N₂(A³Σu⁺), N₂(B³Πg), O₂(¹Δg) and O₂(b¹Σg⁺) on ozone and hydroxyls (H₂O₂, OH, HO₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure |
| title_sort | influence of excited molecules n₂(a³σu⁺), n₂(b³πg), o₂(¹δg) and o₂(b¹σg⁺) on ozone and hydroxyls (h₂o₂, oh, ho₂) kinetics in the plasma of barrier discharge in air at atmospheric pressure |
| topic | Фундаментальная физика плазмы |
| topic_facet | Фундаментальная физика плазмы |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/82099 |
| work_keys_str_mv | AT kalyuzhnayaag influenceofexcitedmoleculesn2a3σun2b3πgo21δgando2b1σgonozoneandhydroxylsh2o2ohho2kineticsintheplasmaofbarrierdischargeinairatatmosphericpressure AT tsiolkovv influenceofexcitedmoleculesn2a3σun2b3πgo21δgando2b1σgonozoneandhydroxylsh2o2ohho2kineticsintheplasmaofbarrierdischargeinairatatmosphericpressure AT kalyuzhnayaag vliânievozbuždennyhmolekuln2a3σun2b3πgo21δgio2b1σgnakinetikuozonaigidroksilovh2o2ohho2vplazmebarʹernogorazrâdavatmosfernomvozduhe AT tsiolkovv vliânievozbuždennyhmolekuln2a3σun2b3πgo21δgio2b1σgnakinetikuozonaigidroksilovh2o2ohho2vplazmebarʹernogorazrâdavatmosfernomvozduhe AT kalyuzhnayaag vplivzbudženihmolekuln2a3σun2b3πgo21δgtao2b1σgnakínetikuozonutagídroksilívh2o2ohho2uplazmíbarêrnogorozrâduvpovítríatmosfernogotisku AT tsiolkovv vplivzbudženihmolekuln2a3σun2b3πgo21δgtao2b1σgnakínetikuozonutagídroksilívh2o2ohho2uplazmíbarêrnogorozrâduvpovítríatmosfernogotisku |